ebooksworld.ir

ebooksworld.ir is SSL secured

Free website and domain report on ebooksworld.ir

Last Updated: 6th October, 2021 Update Now
Overview

Snoop Summary for ebooksworld.ir

This is a free and comprehensive report about ebooksworld.ir. The domain ebooksworld.ir is currently hosted on a server located in United States with the IP address 172.67.184.252, where USD is the local currency and the local language is English. Ebooksworld.ir has the potential to be earning an estimated $11 USD per day from advertising revenue. If ebooksworld.ir was to be sold it would possibly be worth $8,367 USD (based on the daily revenue potential of the website over a 24 month period). Ebooksworld.ir is quite popular with an estimated 4,017 daily unique visitors. This report was last updated 6th October, 2021.

About ebooksworld.ir

Site Preview: ebooksworld.ir ebooksworld.ir
Title:
Description:
Keywords and Tags: education, reference
Related Terms:
Fav Icon:
Age:
Domain Created:
Domain Updated:
Domain Expires:
Review

Snoop Score

2/5

Valuation

$8,367 USD
Note: All valuation figures are estimates.

Popularity

Modest
Note: Popularity is estimated.

Rank, Reach and Authority

Alexa Rank: 155,503
Alexa Reach:
SEMrush Rank (US):
SEMrush Authority Score:
Moz Domain Authority: 0
Moz Page Authority: 0

Organic vs Paid (Google Ads)

Traffic

Visitors

Daily Visitors: 4,017
Monthly Visitors: 122,265
Yearly Visitors: 1,466,205
Note: All visitors figures are estimates.

Visitors By Country

Revenue

Revenue

Daily Revenue: $11 USD
Monthly Revenue: $348 USD
Yearly Revenue: $4,179 USD
Note: All revenue figures are estimates.

Revenue By Country

SEO

Backlinks Analysis (SEMrush)

Top New Follow Links

Top Ranking Keywords (US)

Domain Analysis

Value Length
Domain: ebooksworld.ir 14
Domain Name: ebooksworld 11
Extension (TLD): ir 2

Page Speed Analysis

Average Load Time: 1.44 seconds
Load Time Comparison: Faster than 64% of sites

PageSpeed Insights

Avg. (All Categories) 75
Performance 89
Accessibility 87
Best Practices 73
SEO 82
Progressive Web App 45
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.ebooksworld.ir/
Updated: 6th October, 2021

2.21 seconds
First Contentful Paint (FCP)
66%
21%
13%

0.00 seconds
First Input Delay (FID)
98%
1%
1%

Simulate loading on desktop
89

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for ebooksworld.ir. This includes details about optimizing page load times which can result in a better user experience.

Metrics

First Contentful Paint — 0.5 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 0.8 s
The timing of the largest text or image that is painted.
Time to Interactive — 0.5 s
The time taken for the page to become fully interactive.
Total Blocking Time — 0 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Other

Max Potential First Input Delay — 50 ms
Users could experience a delay when interacting with the page.
First Meaningful Paint — 0.5 s
The time taken for the primary content of the page to be rendered.
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Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
1558.811
11.059
1573.443
6.024
2606.834
13.45
2620.3
108.795
2734.112
49.328
2788.295
8.757
2797.297
13.29
2810.689
11.123
2835.758
31.161
2868.844
14.41
2887.268
18.734
2934.766
5.781
3402.335
6.318
3426.806
7.029
3435.478
24.496
3465.787
6.116
3602.63
50.33
3653.005
5.615
3678.655
55.428
3738.327
50.232
3791.438
24.235
3908.167
14.749
5127.061
17.842
5173.914
6.788
5718.248
6.366
6335.177
9.087
6345.716
9.092
6431.165
7.825
6439.046
15.469
6459.464
24.681
7157.836
6.588
7577.968
29.875
7743.232
13.511
7759.673
13.956
7773.645
9.341
7783.006
9.375
7792.403
8.534
7800.954
8.332
7811.01
8.082
7820.412
20.776
7842.378
7.829
7852.181
8.062
7860.257
9.064
7869.474
8.037
7877.529
7.401
7885.593
9.51
7895.123
6.824
7901.964
7.772
7909.943
8.613
7918.636
9.818
7929.476
6.462
7988.001
8.328
7996.368
9.679
8625.762
13.357
8659.958
6.445
8677.247
5.19
8695.501
7.671
8715.871
16.837
8733.228
16.971
8751.96
14.189
8768.762
18.102
8786.906
16.049
8805.241
16.951
8822.947
15.715
8840.714
21.05
8864.529
6.894
8879.422
15.125
8894.951
14.355
8909.348
5.225
8914.592
13.234
8930.277
15.556
8947.073
11.686
8959.162
19.482
8978.676
16.569
8997.045
12.403
9011.339
16.536
9029.413
13.785
9043.635
16.75
9061.246
14.529
9076.847
15.389
9092.983
15.867
9109.124
16.288
9125.802
17.071
9143.301
15.609
9159.451
15.953
9176.191
16.309
9192.873
16.668
9210.709
15.68
9226.424
15.688
9243.218
15.719
9260.13
18.403
9279.187
12.954
9292.407
16.383
9309.073
16.56
9325.905
16.576
9342.723
15.966
9358.966
16.518
9375.829
16.488
9392.638
16.357
9409.539
15.994
9426.195
16.116
9442.71
16.123
9459.145
16.195
9475.619
16.905
9492.556
16.261
9509.197
16.455
9526.003
16.522
9543.183
15.708
9559.265
18.613
9578.208
13.891
9592.383
16.311
9608.917
16.882
9626.43
17.125
9643.634
18.95
9662.615
18.45
9681.382
16.393
9698.086
15.259
9713.551
18.382
9833.374
7.188
10024.996
7.971
10224.959
6.572
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Opportunities

Eliminate render-blocking resources
Resources, such as JavaScript and style sheets, can block the first paint of the page. Ebooksworld.ir should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
Properly size images — Potential savings of 440 KiB
Images can slow down the page's load time. Ebooksworld.ir should consider serving more appropriate-sized images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
79654
63538
https://dl.ebooksworld.ir/images/Learning.PHP.MySQL.JavaScript.6th.Edition-Robin.Nixon-OReilly.Media-9781492093824-EBooksWorld.ir.jpg
58242
46460
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
53329
42528
https://dl.ebooksworld.ir/images/SQL.Cookbook.2nd.Edition-Anthony.Molinaro-Robert.de.Graaf-OReilly.Media-9781492077442-EBooksWorld.ir.jpg
45176
36038
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
41048
32752
https://dl.ebooksworld.ir/images/React.Cookbook-David.Griffiths-Dawn.Griffiths-OReilly.Media-9781492085843-EBooksWorld.ir.jpg
40170
32044
https://dl.ebooksworld.ir/images/Code.like.a.Pro.in.CSharp-Jort.Rodenburg-Manning-9781617298028-EBooksWorld.ir.jpeg
39550
31557
https://dl.ebooksworld.ir/images/The.TypeScript.Workshop-Ben.Grynhaus-Packt-9781838828493-EBooksWorld.ir.jpg
37385
29825
https://dl.ebooksworld.ir/images/Make.Your.Own.Neural.Network-Tariq.Rashid-CreateSpace-9781530826605-EBooksWorld.ir.jpg
29484
23077
https://dl.ebooksworld.ir/images/Entity.Framework.Core.5.Getting.Started-Julie.Lerman-Pluralsight-EBooksWorld.ir.jpg
23742
18941
https://dl.ebooksworld.ir/images/C.Primer.Plus.6th.Edition-Stephen.Prata-Addison-Wesley-9780321928429-EBooksWorld.ir.jpg
22083
17612
https://dl.ebooksworld.ir/images/CSharp.Events.Delegates.and.Lambdas.by.Dan.Wahlin-Pluralsight-EBooksWorld.ir.jpg
19767
15770
https://dl.ebooksworld.ir/images/Error.Handling.in.CSharp.with.Exceptions.by.Jason.Roberts-Pluralsight-EBooksWorld.ir.jpg
19664
15687
https://dl.ebooksworld.ir/images/Dates.and.Times.in.NET.by.Filip.Ekberg-Pluralsight-EBooksWorld.ir.jpg
19412
15486
https://dl.ebooksworld.ir/images/CSharp.Extension.Methods.by.Elton.Stoneman-Pluralsight-EBooksWorld.ir.jpg
18597
14836
https://dl.ebooksworld.ir/images/CSharp.Interfaces.by.Jeremy.Clark-Pluralsight-EBooksWorld.ir.jpg
17856
14245
Defer offscreen images
Time to Interactive can be slowed down by resources on the page. Ebooksworld.ir should consider lazy-loading offscreen and hidden images.
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Ebooksworld.ir should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Ebooksworld.ir should consider minifying JS files.
Reduce unused CSS — Potential savings of 17 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Ebooksworld.ir should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.ebooksworld.ir/bundle/bootstrap-css.css?v=DDZW1MOOJS1_-m9sUfDF4cBHP_E
21050
17699
Reduce unused JavaScript — Potential savings of 49 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.ebooksworld.ir/bundle/jqueryuitools.js?v=yKdogPGLbe2zNDie2Rd0Fzbjk6Y
32137
25681
https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenMax.min.js
32592
24697
Efficiently encode images
Unoptimized images can consume more cellular data than what is necessary.
Serve images in next-gen formats — Potential savings of 293 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
79654
38529.65
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
53329
29028.8
https://dl.ebooksworld.ir/images/Learning.PHP.MySQL.JavaScript.6th.Edition-Robin.Nixon-OReilly.Media-9781492093824-EBooksWorld.ir.jpg
58242
27268.35
https://dl.ebooksworld.ir/images/SQL.Cookbook.2nd.Edition-Anthony.Molinaro-Robert.de.Graaf-OReilly.Media-9781492077442-EBooksWorld.ir.jpg
45176
22588.15
https://dl.ebooksworld.ir/images/The.TypeScript.Workshop-Ben.Grynhaus-Packt-9781838828493-EBooksWorld.ir.jpg
37385
21829.85
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
41048
21691.7
https://dl.ebooksworld.ir/images/Code.like.a.Pro.in.CSharp-Jort.Rodenburg-Manning-9781617298028-EBooksWorld.ir.jpeg
39550
20796.75
https://dl.ebooksworld.ir/images/React.Cookbook-David.Griffiths-Dawn.Griffiths-OReilly.Media-9781492085843-EBooksWorld.ir.jpg
40170
19517.85
https://dl.ebooksworld.ir/images/Make.Your.Own.Neural.Network-Tariq.Rashid-CreateSpace-9781530826605-EBooksWorld.ir.jpg
29484
13669.8
https://dl.ebooksworld.ir/images/Entity.Framework.Core.5.Getting.Started-Julie.Lerman-Pluralsight-EBooksWorld.ir.jpg
23742
11208.75
https://dl.ebooksworld.ir/images/C.Primer.Plus.6th.Edition-Stephen.Prata-Addison-Wesley-9780321928429-EBooksWorld.ir.jpg
22083
10489.8
https://dl.ebooksworld.ir/images/CSharp.Events.Delegates.and.Lambdas.by.Dan.Wahlin-Pluralsight-EBooksWorld.ir.jpg
19767
9608
https://dl.ebooksworld.ir/images/Error.Handling.in.CSharp.with.Exceptions.by.Jason.Roberts-Pluralsight-EBooksWorld.ir.jpg
19664
9480.7
https://dl.ebooksworld.ir/images/Dates.and.Times.in.NET.by.Filip.Ekberg-Pluralsight-EBooksWorld.ir.jpg
19412
9446.7
https://cdn.kaprila.com/image/22/b83a552a-b382-4aa9-a7c7-f4133ba782b4.jpg
19480
9215.8
https://dl.ebooksworld.ir/images/CSharp.Extension.Methods.by.Elton.Stoneman-Pluralsight-EBooksWorld.ir.jpg
18597
8641
https://cdn.kaprila.com/image/22/6b90853a-ff08-4a0d-b844-4b9463db40fb.jpg
35417
8487
https://dl.ebooksworld.ir/images/CSharp.Interfaces.by.Jeremy.Clark-Pluralsight-EBooksWorld.ir.jpg
17856
8454.3
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Avoid multiple page redirects — Potential savings of 190 ms
Redirects can cause additional delays before the page can begin loading. Ebooksworld.ir should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://ebooksworld.ir/
190
https://www.ebooksworld.ir/
0
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Ebooksworld.ir should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.

Diagnostics

Avoids enormous network payloads — Total size was 1,722 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
80114
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Light.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
60851
https://dl.ebooksworld.ir/images/Learning.PHP.MySQL.JavaScript.6th.Edition-Robin.Nixon-OReilly.Media-9781492093824-EBooksWorld.ir.jpg
58701
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
53788
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Bold.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
53455
https://www.ebooksworld.ir/content/fonts/vazir/Vazir.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
48769
https://beta.kaprila.com/a/images/loading/loading-logo-new.gif
47103
https://dl.ebooksworld.ir/images/SQL.Cookbook.2nd.Edition-Anthony.Molinaro-Robert.de.Graaf-OReilly.Media-9781492077442-EBooksWorld.ir.jpg
45635
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
41507
https://dl.ebooksworld.ir/images/React.Cookbook-David.Griffiths-Dawn.Griffiths-OReilly.Media-9781492085843-EBooksWorld.ir.jpg
40629
Avoid chaining critical requests — 9 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Ebooksworld.ir should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 0.1 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.ebooksworld.ir/
808.307
3.96
1.406
https://cdnjs.cloudflare.com/ajax/libs/gsap/3.5.1/gsap.min.js
779.54699999997
58.822
1.167
Unattributable
229.54
4.565
0.183
https://www.ebooksworld.ir/bundle/jquery.js?v=8tDMUldj_h7JbuGsgnXdtxuPDms
70.034
43.405
2.277
https://faradars.org/banner/embed/header_external?medium=banner-kaprila&campaign=header-sticky&content=ev-1400-07-std27&source=ebooksworld.ir
69.198
2.875
1.587
https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenMax.min.js
59.49
25.221
1.969
Keep request counts low and transfer sizes small — 83 requests • 1,722 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
83
1763024
Image
50
1200134
Script
13
255844
Font
6
228142
Stylesheet
8
46728
Document
3
30007
Other
3
2169
Media
0
0
Third-party
44
811818
Minimize third-party usage — Third-party code blocked the main thread for 0 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
55608
0
39981
0
38863
0
716
0
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 1 long task found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.ebooksworld.ir/
490
54
Avoid non-composited animations — 2 animated elements found
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Element Name
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of ebooksworld.ir on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Metrics

Cumulative Layout Shift — 0.14
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Diagnostics

Avoid an excessive DOM size — 1,360 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1360
Maximum DOM Depth
13
Maximum Child Elements
167
Minimize main-thread work — 2.2 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Rendering
1148.0359999999
Style & Layout
389.592
Other
354.347
Script Evaluation
262.096
Parse HTML & CSS
53.638
Script Parsing & Compilation
19.721

Metrics

Speed Index — 3.1 s
The time taken for the page contents to be visibly populated.

Opportunities

Reduce initial server response time — Root document took 1,050 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.ebooksworld.ir/
1046.24

Diagnostics

Serve static assets with an efficient cache policy — 34 resources found
Ebooksworld.ir can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://beta.kaprila.com/a/show.js.php?ref=ebooksworld.ir&page_title=EBooksWorld%20-%20%D9%85%D8%B1%D8%AC%D8%B9%20%DA%A9%D8%AA%D8%A7%D8%A8%20%D9%87%D8%A7%DB%8C%20%D8%B2%D8%A8%D8%A7%D9%86%20%D8%A7%D8%B5%D9%84%DB%8C%20%D8%A8%D8%B1%D9%86%D8%A7%D9%85%D9%87%20%D9%86%D9%88%DB%8C%D8%B3%DB%8C%20%D9%88%20%DA%A9%D8%A7%D9%85%D9%BE%DB%8C%D9%88%D8%AA%D8%B1&page_url=https://www.ebooksworld.ir/
0
894
https://beta.kaprila.com/a/show-header.php?ref=ebooksworld.ir
0
661
https://www.google-analytics.com/analytics.js
7200000
20399
https://ssl.google-analytics.com/ga.js
7200000
17820
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Light.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
14400000
60851
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Bold.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
14400000
53455
https://www.ebooksworld.ir/content/fonts/vazir/Vazir.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
14400000
48769
https://www.ebooksworld.ir/Content/Images/loading4.gif
14400000
21449
https://www.ebooksworld.ir/Content/images/glyphicons-halflings.png
14400000
13671
https://www.ebooksworld.ir/Content/img/glyphicons-halflings-white.png
14400000
9656
https://www.ebooksworld.ir/Content/images/google_plus.png
14400000
5345
https://www.ebooksworld.ir/Content/images/facebook.png
14400000
4549
https://www.ebooksworld.ir/Content/images/twitter.png
14400000
4147
https://www.ebooksworld.ir/Content/Images/paper.jpg
14400000
2424
https://www.ebooksworld.ir/Content/images/telegram.png
14400000
2356
https://www.ebooksworld.ir/Content/images/instagram.png
14400000
1502
https://www.ebooksworld.ir/Content/Images/rss.png
14400000
1334
https://www.ebooksworld.ir/Content/themes/start/images/ui-bg_inset-hard_100_fcfdfd_1x100.png
14400000
1162
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
604800000
80114
https://dl.ebooksworld.ir/images/Learning.PHP.MySQL.JavaScript.6th.Edition-Robin.Nixon-OReilly.Media-9781492093824-EBooksWorld.ir.jpg
604800000
58701
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
604800000
53788
https://dl.ebooksworld.ir/images/SQL.Cookbook.2nd.Edition-Anthony.Molinaro-Robert.de.Graaf-OReilly.Media-9781492077442-EBooksWorld.ir.jpg
604800000
45635
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
604800000
41507
https://dl.ebooksworld.ir/images/React.Cookbook-David.Griffiths-Dawn.Griffiths-OReilly.Media-9781492085843-EBooksWorld.ir.jpg
604800000
40629
https://dl.ebooksworld.ir/images/Code.like.a.Pro.in.CSharp-Jort.Rodenburg-Manning-9781617298028-EBooksWorld.ir.jpeg
604800000
40009
https://dl.ebooksworld.ir/images/The.TypeScript.Workshop-Ben.Grynhaus-Packt-9781838828493-EBooksWorld.ir.jpg
604800000
37844
https://dl.ebooksworld.ir/images/Make.Your.Own.Neural.Network-Tariq.Rashid-CreateSpace-9781530826605-EBooksWorld.ir.jpg
604800000
29943
https://dl.ebooksworld.ir/images/Entity.Framework.Core.5.Getting.Started-Julie.Lerman-Pluralsight-EBooksWorld.ir.jpg
604800000
24201
https://dl.ebooksworld.ir/images/C.Primer.Plus.6th.Edition-Stephen.Prata-Addison-Wesley-9780321928429-EBooksWorld.ir.jpg
604800000
22542
https://dl.ebooksworld.ir/images/CSharp.Events.Delegates.and.Lambdas.by.Dan.Wahlin-Pluralsight-EBooksWorld.ir.jpg
604800000
20226
https://dl.ebooksworld.ir/images/Error.Handling.in.CSharp.with.Exceptions.by.Jason.Roberts-Pluralsight-EBooksWorld.ir.jpg
604800000
20123
https://dl.ebooksworld.ir/images/Dates.and.Times.in.NET.by.Filip.Ekberg-Pluralsight-EBooksWorld.ir.jpg
604800000
19871
https://dl.ebooksworld.ir/images/CSharp.Extension.Methods.by.Elton.Stoneman-Pluralsight-EBooksWorld.ir.jpg
604800000
19056
https://dl.ebooksworld.ir/images/CSharp.Interfaces.by.Jeremy.Clark-Pluralsight-EBooksWorld.ir.jpg
604800000
18315
Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Bold.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
1018.6769999564
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Light.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
1126.7140000127
https://www.ebooksworld.ir/content/fonts/vazir/Vazir.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
1052.7559999609
https://faradars.org/theme/display/ilishop/external_festival/fonts/Shabnam-FD-WOL.woff2
825.82100003492
https://faradars.org/theme/display/ilishop/external_festival/fonts/Shabnam-Bold-FD-WOL.woff2
808.94499993883
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL Failing Elements
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/C.Primer.Plus.6th.Edition-Stephen.Prata-Addison-Wesley-9780321928429-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Learning.PHP.MySQL.JavaScript.6th.Edition-Robin.Nixon-OReilly.Media-9781492093824-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/React.Cookbook-David.Griffiths-Dawn.Griffiths-OReilly.Media-9781492085843-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/SQL.Cookbook.2nd.Edition-Anthony.Molinaro-Robert.de.Graaf-OReilly.Media-9781492077442-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
https://dl.ebooksworld.ir/images/Code.like.a.Pro.in.CSharp-Jort.Rodenburg-Manning-9781617298028-EBooksWorld.ir.jpeg
https://dl.ebooksworld.ir/images/The.TypeScript.Workshop-Ben.Grynhaus-Packt-9781838828493-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/CSharp.Events.Delegates.and.Lambdas.by.Dan.Wahlin-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/CSharp.Extension.Methods.by.Elton.Stoneman-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/CSharp.Interfaces.by.Jeremy.Clark-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Entity.Framework.Core.5.Getting.Started-Julie.Lerman-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Dates.and.Times.in.NET.by.Filip.Ekberg-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Error.Handling.in.CSharp.with.Exceptions.by.Jason.Roberts-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Make.Your.Own.Neural.Network-Tariq.Rashid-CreateSpace-9781530826605-EBooksWorld.ir.jpg
https://www.ebooksworld.ir/Content/Images/rss.png
87

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of ebooksworld.ir. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Ebooksworld.ir may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
CPP
Css
F#
GIS
IOC
ios
Lua
MEF
MVC
PHP
Qt
SEO
SPA
SQL
UML
WPF
PHP
Css
SPA
SQL

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements

Internationalization and localization

`<html>` element does not have a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
Failing Elements

Tables and lists

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
73

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that ebooksworld.ir should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
1.9.1
jQuery UI
1.10.2
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://ebooksworld.ir/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 5 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
4
Medium
1
High

Audits

Displays images with incorrect aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
URL Aspect Ratio (Displayed) Aspect Ratio (Actual)
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
140 x 150 (0.93)
400 x 571 (0.70)
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
140 x 150 (0.93)
400 x 516 (0.78)
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
140 x 150 (0.93)
400 x 501 (0.80)
https://dl.ebooksworld.ir/images/Code.like.a.Pro.in.CSharp-Jort.Rodenburg-Manning-9781617298028-EBooksWorld.ir.jpeg
140 x 150 (0.93)
400 x 501 (0.80)
https://dl.ebooksworld.ir/images/The.TypeScript.Workshop-Ben.Grynhaus-Packt-9781838828493-EBooksWorld.ir.jpg
140 x 150 (0.93)
400 x 494 (0.81)
https://dl.ebooksworld.ir/images/CSharp.Events.Delegates.and.Lambdas.by.Dan.Wahlin-Pluralsight-EBooksWorld.ir.jpg
140 x 150 (0.93)
400 x 494 (0.81)
82

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for ebooksworld.ir. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of ebooksworld.ir on mobile screens.
Document uses legible font sizes
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Tap targets are sized appropriately
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Document does not have a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
45

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of ebooksworld.ir. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of ebooksworld.ir on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Avg. (All Categories) 75
Performance 77
Accessibility 87
Best Practices 80
SEO 80
Progressive Web App 50
0–49 (Fail) 50–89 (Average) 90–100 (Pass)
URL: https://www.ebooksworld.ir/
Updated: 6th October, 2021
Simulate loading on mobile
77

Performance

Indicates how well the page is performing and highlights opportunities where performance may be improved for ebooksworld.ir. This includes details about optimizing page load times which can result in a better user experience.

Metrics

Total Blocking Time — 80 ms
The total blocking time is the sum of all time periods between First Contentful Paint and Time to Interactive (when task length exceeded 50ms).

Opportunities

Properly size images
Images can slow down the page's load time. Ebooksworld.ir should consider serving more appropriate-sized images.
Defer offscreen images — Potential savings of 300 KiB
Time to Interactive can be slowed down by resources on the page. Ebooksworld.ir should consider lazy-loading offscreen and hidden images.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
79654
79654
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
53329
53329
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
41048
41048
https://dl.ebooksworld.ir/images/Code.like.a.Pro.in.CSharp-Jort.Rodenburg-Manning-9781617298028-EBooksWorld.ir.jpeg
39550
39550
https://dl.ebooksworld.ir/images/The.TypeScript.Workshop-Ben.Grynhaus-Packt-9781838828493-EBooksWorld.ir.jpg
37385
37385
https://dl.ebooksworld.ir/images/CSharp.Events.Delegates.and.Lambdas.by.Dan.Wahlin-Pluralsight-EBooksWorld.ir.jpg
19767
19767
https://dl.ebooksworld.ir/images/CSharp.Extension.Methods.by.Elton.Stoneman-Pluralsight-EBooksWorld.ir.jpg
18597
18597
https://dl.ebooksworld.ir/images/CSharp.Interfaces.by.Jeremy.Clark-Pluralsight-EBooksWorld.ir.jpg
17856
17856
Minify CSS
Cascading Style Sheets (CSS) files can contribute to network payload sizes. Ebooksworld.ir should consider minifying CSS files.
Minify JavaScript
JavaScript (JS) files can contribute to network payload sizes and increase script parse times. Ebooksworld.ir should consider minifying JS files.
Enable text compression
Text-based resources should be served with compression, such as gzip, deflate or brotli.
Preconnect to required origins
Resource hints, such as 'preconnect' or 'dns-prefetch', may assist in establishing early connections to important third-party origins.
Avoid multiple page redirects — Potential savings of 630 ms
Redirects can cause additional delays before the page can begin loading. Ebooksworld.ir should avoid multiple or unnecessary page redirects.
URL Time Spent (Ms)
http://ebooksworld.ir/
630
https://www.ebooksworld.ir/
0
Preload key requests
Key requests can be preloaded by using '<link rel=preload>'. Ebooksworld.ir should consider using '<link rel=preload>' to prioritize fetching resources that are currently requested later in page load.
Use video formats for animated content
Large GIFs are inefficient for delivering animated content. It is recommended to use MPEG4/WebM videos for animations and PNG/WebP for static images instead of GIF.
Remove duplicate modules in JavaScript bundles
Ensure that no duplicate JavaScript modules from bundles exist to reduce bytes consumed by network activity.
Avoid serving legacy JavaScript to modern browsers
Polyfills and transforms enable legacy browsers to use new JavaScript features. For bundled JavaScript it is recommended to adopt a modern script deployment strategy using module/nomodule feature detection. This will reduce the amount of code shipped to modern browsers.
Preload Largest Contentful Paint image
It is recommended to preload images used by LCP elements, to improve LCP time.

Diagnostics

Avoids enormous network payloads — Total size was 1,820 KiB
Large network payloads can cost users money and are linked to long load times.
URL Transfer Size (Bytes)
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
80114
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Light.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
60857
https://dl.ebooksworld.ir/images/Learning.PHP.MySQL.JavaScript.6th.Edition-Robin.Nixon-OReilly.Media-9781492093824-EBooksWorld.ir.jpg
58701
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
53788
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Bold.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
53467
https://cdn.kaprila.com/image/22/2b9bd616-9269-40c7-8889-4fb71672bb47.jpg
49139
https://www.ebooksworld.ir/content/fonts/vazir/Vazir.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
48779
https://beta.kaprila.com/a/images/loading/loading-logo-new.gif
47103
https://dl.ebooksworld.ir/images/SQL.Cookbook.2nd.Edition-Anthony.Molinaro-Robert.de.Graaf-OReilly.Media-9781492077442-EBooksWorld.ir.jpg
45635
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
41507
Avoid chaining critical requests — 9 chains found
Below is a list of Critical Request Chains, which shows which resources are loaded with a high priority. Ebooksworld.ir should consider reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.
User Timing marks and measures
Make use of the User Timing API to measure an app's real-world performance during key user experiences.
JavaScript execution time — 0.9 s
JavaScript (JS) execution time can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
URL Total CPU Time (Ms) Script Evaluation (Ms) Script Parse (Ms)
https://www.ebooksworld.ir/
1090.996
14.904
5.5
Unattributable
880.236
17.504
0.52
https://cdnjs.cloudflare.com/ajax/libs/gsap/3.5.1/gsap.min.js
775.204
271.808
4.3
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Keep request counts low and transfer sizes small — 85 requests • 1,820 KiB
It is advised to add a budgets.json file in order to set budgets for the quantity and size of page resources.
Resource Type Requests Transfer Size (Bytes)
Total
85
1863815
Image
52
1300924
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13
255905
Font
6
228170
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46521
Document
3
30130
Other
3
2165
Media
0
0
Third-party
46
912754
Minimize third-party usage — Third-party code blocked the main thread for 50 ms
It is advised to either limit, remove or delay the loading of redundant third-party code which may be significantly impacting load performance.
Third-Party Transfer Size (Bytes) Main-Thread Blocking Time (Ms)
38863
45.092
55556
1.932
39985
0
716
0
Lazy load third-party resources with facades
Consider replacing third-party embeds with a facade until they are required (use lazy loading).
Largest Contentful Paint element — 1 element found
The element which was identified as the Largest Contentful Paint.
Element
Largest Contentful Paint image was not lazily loaded
Above-the-fold images that are lazily loaded render later in the page lifecycle, which can delay the largest contentful paint.
Uses passive listeners to improve scrolling performance
Improve the page's scroll performance by marking touch and wheel event listeners as 'passive'.
Avoids `document.write()`
Avoid or limit the use of external scripts that are dynamically injected via 'document.write()' as users on slow connections will be delayed by tens of seconds.
Avoid long main-thread tasks — 8 long tasks found
Below is a list of the longest tasks on the main thread, which is useful when identifying the worst input delay contributors.
URL Start Time (Ms) Duration (Ms)
https://www.ebooksworld.ir/
1622
206
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134
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113
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101
https://www.ebooksworld.ir/
1941
82
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5389
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7892
61
https://www.googletagmanager.com/gtag/js?id=UA-73782867-4
3709
50
Avoid non-composited animations
It is recommended to avoid non-composited animations which are often janky and increase CLS.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of ebooksworld.ir on mobile screens.

Budgets

Performance budget
It is advised to keep the quantity and size of all network requests under the targets set by the provided performance budget.
Timing budget
It is advised to set a timing budget to monitor the performance of your site.

Other

Network Requests
Below is a list of network requests that were made during page load.
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Script
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Script
https://ssl.google-analytics.com/ga.js
h2
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Script
https://beta.kaprila.com/a/fonts/yekan/Yekan.woff
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Font
Network Round Trip Times — 0 ms
High Network RTT (Round Trip Times) can have a large impact on performance. Providing servers geographically closer to the user could improve performance.
Server Backend Latencies — 0 ms
High server latencies indicate the server is overloaded or has a poor backend performance.
Tasks
Below is a list of the top-level main thread tasks that executed during page load.
Start Time (Ms) End Time (Ms)
1679.557
7.598
1893.324
10.637
1903.974
103.083
2018.867
5.218
2029.313
8.301
2044.599
12.49
2058.575
56.642
2124.698
40.969
2167.235
67.143
2242.954
23.516
3300.644
9.063
4569.635
10.21
4621.541
7.439
4631.836
5.997
5831.991
9.624
5845.483
10.304
5992.262
6.035
5998.308
5.261
6009.353
17.203
6888.191
7.676
7057.404
6.826
7098.391
25.128
7123.597
8.838
7287.203
7.403
7296.365
9.651
7306.663
7.224
7319.073
8.899
7329.211
9.461
7338.689
10.149
7348.864
8.65
7357.537
8.476
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7.906
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7.855
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7.813
7393.925
8.561
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8.038
7410.564
7.169
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15.275
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7.524
8176.297
7.848
8456.947
5.928
9252.967
12.297
Diagnostics
Below is a collection of useful page vitals.
View Data
Metrics
Below is a collection of metrics.
View Data
Script Treemap Data
Provide as required, for treemap app.

Metrics

First Contentful Paint — 2.0 s
The time taken for the first image or text on the page to be rendered.
Largest Contentful Paint — 2.8 s
The timing of the largest text or image that is painted.
Cumulative Layout Shift — 0.152
Cumulative Layout Shift is the measurement of visible elements collective movement within the viewport.
View Data

Other

Max Potential First Input Delay — 130 ms
Users could experience a delay when interacting with the page.
First Meaningful Paint — 2.9 s
The time taken for the primary content of the page to be rendered.
First Contentful Paint (3G) — 3960 ms
The time taken for the first image or text on the page to be rendered while on a 3G network.

Opportunities

Eliminate render-blocking resources — Potential savings of 230 ms
Resources, such as JavaScript and style sheets, can block the first paint of the page. Ebooksworld.ir should consider delivering critical JavaScript/style sheets (JS/CSS) inline and deferring all non-critical JS/CSS.
URL Transfer Size (Bytes) Potential Savings (Ms)
https://www.ebooksworld.ir/bundle/bootstrap-css.css?v=DDZW1MOOJS1_-m9sUfDF4cBHP_E
20954
450
Reduce unused CSS — Potential savings of 18 KiB
Dead and/or unused rules in Style Sheets (CSS) can contribute to network payload sizes. Ebooksworld.ir should consider removing dead rules from style sheets and deferring the loading of CSS not used for above-the-fold content.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.ebooksworld.ir/bundle/bootstrap-css.css?v=DDZW1MOOJS1_-m9sUfDF4cBHP_E
20954
17925
Reduce unused JavaScript — Potential savings of 49 KiB
It is advised to remove unused JavaScript in order to reduce bytes consumed by network activity.
URL Transfer Size (Bytes) Potential Savings (Bytes)
https://www.ebooksworld.ir/bundle/jqueryuitools.js?v=yKdogPGLbe2zNDie2Rd0Fzbjk6Y
32227
25753
https://cdnjs.cloudflare.com/ajax/libs/gsap/1.18.0/TweenMax.min.js
32546
24720
Efficiently encode images — Potential savings of 26 KiB
Unoptimized images can consume more cellular data than what is necessary.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://cdn.kaprila.com/image/22/2b9bd616-9269-40c7-8889-4fb71672bb47.jpg
48788
14890
https://cdn.kaprila.com/image/22/e8144fe8-9b84-49a3-ad26-ae3acfe1f595.jpg
29194
6164
https://cdn.kaprila.com/image/22/66e923ef-54a8-4026-b6b9-269ff9dceeb9kpl.jpg
28003
5432

Diagnostics

Avoid an excessive DOM size — 1,360 elements
A large DOM (Document Object Model) will increase memory usage, cause longer system calculations as well as costly layout reflows.
Statistic Element Value
Total DOM Elements
1360
Maximum DOM Depth
13
Maximum Child Elements
167

Metrics

Speed Index — 7.5 s
The time taken for the page contents to be visibly populated.
Time to Interactive — 8.4 s
The time taken for the page to become fully interactive.

Opportunities

Serve images in next-gen formats — Potential savings of 358 KiB
Consider JPEG 2000, JPEG XR or WebP image formats which provide better compression than PNG and JPEG.
URL Resource Size (Bytes) Potential Savings (Bytes)
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
79654
38529.65
https://cdn.kaprila.com/image/22/2b9bd616-9269-40c7-8889-4fb71672bb47.jpg
48788
31146.3
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
53329
29028.8
https://dl.ebooksworld.ir/images/Learning.PHP.MySQL.JavaScript.6th.Edition-Robin.Nixon-OReilly.Media-9781492093824-EBooksWorld.ir.jpg
58242
27268.35
https://dl.ebooksworld.ir/images/SQL.Cookbook.2nd.Edition-Anthony.Molinaro-Robert.de.Graaf-OReilly.Media-9781492077442-EBooksWorld.ir.jpg
45176
22588.15
https://dl.ebooksworld.ir/images/The.TypeScript.Workshop-Ben.Grynhaus-Packt-9781838828493-EBooksWorld.ir.jpg
37385
21829.85
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
41048
21691.7
https://dl.ebooksworld.ir/images/Code.like.a.Pro.in.CSharp-Jort.Rodenburg-Manning-9781617298028-EBooksWorld.ir.jpeg
39550
20796.75
https://dl.ebooksworld.ir/images/React.Cookbook-David.Griffiths-Dawn.Griffiths-OReilly.Media-9781492085843-EBooksWorld.ir.jpg
40170
19517.85
https://cdn.kaprila.com/image/22/e8144fe8-9b84-49a3-ad26-ae3acfe1f595.jpg
29194
18373.3
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28003
17026.65
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29484
13669.8
https://dl.ebooksworld.ir/images/Entity.Framework.Core.5.Getting.Started-Julie.Lerman-Pluralsight-EBooksWorld.ir.jpg
23742
11208.75
https://dl.ebooksworld.ir/images/C.Primer.Plus.6th.Edition-Stephen.Prata-Addison-Wesley-9780321928429-EBooksWorld.ir.jpg
22083
10489.8
https://dl.ebooksworld.ir/images/CSharp.Events.Delegates.and.Lambdas.by.Dan.Wahlin-Pluralsight-EBooksWorld.ir.jpg
19767
9608
https://dl.ebooksworld.ir/images/Error.Handling.in.CSharp.with.Exceptions.by.Jason.Roberts-Pluralsight-EBooksWorld.ir.jpg
19664
9480.7
https://dl.ebooksworld.ir/images/Dates.and.Times.in.NET.by.Filip.Ekberg-Pluralsight-EBooksWorld.ir.jpg
19412
9446.7
https://cdn.kaprila.com/image/22/8dcddfe4-5afc-4d76-995b-93167f39fa1c.jpg
18787
9349.85
https://cdn.kaprila.com/image/22/1c00d7c2-19bc-4321-aa49-7b44fe205747.jpg
40471
8813.9
https://dl.ebooksworld.ir/images/CSharp.Extension.Methods.by.Elton.Stoneman-Pluralsight-EBooksWorld.ir.jpg
18597
8641
https://dl.ebooksworld.ir/images/CSharp.Interfaces.by.Jeremy.Clark-Pluralsight-EBooksWorld.ir.jpg
17856
8454.3
Reduce initial server response time — Root document took 1,120 ms
It is advised to keep the server response time short for the main document, because all other requests depend on it.
URL Time Spent (Ms)
https://www.ebooksworld.ir/
1124.032

Diagnostics

Serve static assets with an efficient cache policy — 34 resources found
Ebooksworld.ir can speed up repeat visits by increasing the cache lifetime, which is essentially how long before a cached copy expires.
URL Cache TTL (Ms) Transfer Size (Bytes)
https://beta.kaprila.com/a/show.js.php?ref=ebooksworld.ir&page_title=EBooksWorld%20-%20%D9%85%D8%B1%D8%AC%D8%B9%20%DA%A9%D8%AA%D8%A7%D8%A8%20%D9%87%D8%A7%DB%8C%20%D8%B2%D8%A8%D8%A7%D9%86%20%D8%A7%D8%B5%D9%84%DB%8C%20%D8%A8%D8%B1%D9%86%D8%A7%D9%85%D9%87%20%D9%86%D9%88%DB%8C%D8%B3%DB%8C%20%D9%88%20%DA%A9%D8%A7%D9%85%D9%BE%DB%8C%D9%88%D8%AA%D8%B1&page_url=https://www.ebooksworld.ir/
0
882
https://beta.kaprila.com/a/show-header.php?ref=ebooksworld.ir
0
661
https://www.google-analytics.com/analytics.js
7200000
20399
https://ssl.google-analytics.com/ga.js
7200000
17820
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14400000
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14400000
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14400000
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14400000
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14400000
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https://www.ebooksworld.ir/Content/images/google_plus.png
14400000
5367
https://www.ebooksworld.ir/Content/images/facebook.png
14400000
4557
https://www.ebooksworld.ir/Content/images/twitter.png
14400000
4153
https://www.ebooksworld.ir/Content/Images/paper.jpg
14400000
2434
https://www.ebooksworld.ir/Content/images/telegram.png
14400000
2356
https://www.ebooksworld.ir/Content/images/instagram.png
14400000
1508
https://www.ebooksworld.ir/Content/Images/rss.png
14400000
1340
https://www.ebooksworld.ir/Content/themes/start/images/ui-bg_inset-hard_100_fcfdfd_1x100.png
14400000
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604800000
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604800000
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604800000
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604800000
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604800000
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604800000
18315
Minimize main-thread work — 4.2 s
Main-thread work timing can be lowered by reducing the time required for parsing, compiling and executing JS. Delivering smaller JS payloads may help with this.
Category Time Spent (Ms)
Style & Layout
1180.12
Other
1138.864
Script Evaluation
979.784
Rendering
618.71600000002
Parse HTML & CSS
191.508
Script Parsing & Compilation
72.808
Ensure text remains visible during webfont load
Make use of the font-display CSS feature, which will ensure text is user-visible while webfonts are loading.
URL Potential Savings (Ms)
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Bold.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
114.6860000008
https://www.ebooksworld.ir/content/fonts/vazir/Vazir-Light.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
111.85000000114
https://www.ebooksworld.ir/content/fonts/vazir/Vazir.woff?v=78a7S9JkqdnOUZsLzNGik5DAjoc
133.67599999765
https://faradars.org/theme/display/ilishop/external_festival/fonts/Shabnam-FD-WOL.woff2
1049.1299999994
https://faradars.org/theme/display/ilishop/external_festival/fonts/Shabnam-Bold-FD-WOL.woff2
1024.2429999926
Image elements do not have explicit `width` and `height`
Reduce layout shifts and improve CLS by setting explicit width and height properties on image elements.
URL Failing Elements
https://dl.ebooksworld.ir/images/Pro.ASP.NET.Core.Identity-Adam.Freeman-Apress-9781484268575-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/C.Primer.Plus.6th.Edition-Stephen.Prata-Addison-Wesley-9780321928429-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Learning.PHP.MySQL.JavaScript.6th.Edition-Robin.Nixon-OReilly.Media-9781492093824-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/React.Cookbook-David.Griffiths-Dawn.Griffiths-OReilly.Media-9781492085843-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/SQL.Cookbook.2nd.Edition-Anthony.Molinaro-Robert.de.Graaf-OReilly.Media-9781492077442-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/The.Intel.Microprocessors.8th.Edition-Barry.B.Brey-Prentice.Hall-9780135026458-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/API.Design.Patterns-JJ.Geewax-Manning-9781617295850-EBooksWorld.ir.jpeg
https://dl.ebooksworld.ir/images/Code.like.a.Pro.in.CSharp-Jort.Rodenburg-Manning-9781617298028-EBooksWorld.ir.jpeg
https://dl.ebooksworld.ir/images/The.TypeScript.Workshop-Ben.Grynhaus-Packt-9781838828493-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/CSharp.Events.Delegates.and.Lambdas.by.Dan.Wahlin-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/CSharp.Extension.Methods.by.Elton.Stoneman-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/CSharp.Interfaces.by.Jeremy.Clark-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Entity.Framework.Core.5.Getting.Started-Julie.Lerman-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Dates.and.Times.in.NET.by.Filip.Ekberg-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Error.Handling.in.CSharp.with.Exceptions.by.Jason.Roberts-Pluralsight-EBooksWorld.ir.jpg
https://dl.ebooksworld.ir/images/Make.Your.Own.Neural.Network-Tariq.Rashid-CreateSpace-9781530826605-EBooksWorld.ir.jpg
https://www.ebooksworld.ir/Content/Images/rss.png
87

Accessibility

Indicates how accessible the page is and highlights opportunities where the page can be made more accessible to users of ebooksworld.ir. This includes details about various page attributes that can be optimized.

Navigation

`[accesskey]` values are unique
Access keys assist users with focusing on different parts of the page. Each access key should be unique for proper navigation.
The page contains a heading, skip link, or landmark region
It is advised to provide ways to bypass repetitive content, allowing users to navigate the page efficiently.
`[id]` attributes on active, focusable elements are unique
Ensure all focusable elements have a unique id value to allow them to be visible to users of assistive technologies, like a screen reader.
No element has a `[tabindex]` value greater than 0
Although technically valid, a tabindex value greater than 0 often creates frustrating experiences for users who rely on assistive technologies.

ARIA

`[aria-*]` attributes match their roles
Avoid mismatching 'aria-*' attributes and their 'role' value, as it invalidates the attribute.
`button`, `link`, and `menuitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-hidden="true"]` is not present on the document `<body>`
If aria-hidden=true is set on the document body, assistive technologies, like a screen reader will work inconsistently.
`[aria-hidden="true"]` elements do not contain focusable descendents
Interactive elements within an aria-hidden=true element are unavailable to users of assistive technologies, like a screen reader.
ARIA input fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when an input field does not have an accessible name specified.
ARIA `meter` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `progressbar` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[role]`s have all required `[aria-*]` attributes
Some ARIA roles have required 'aria-*' attributes, which provide essential information about state and functionality.
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
Some ARIA parent roles cannot perform their intended functions if specific child roles are not used.
`[role]`s are contained by their required parent element
Some ARIA child roles cannot perform their intended functions if specific parent roles are not used.
`[role]` values are valid
All ARIA roles require valid values to perform their intended functions.
ARIA toggle fields have accessible names
Generic names are announced to users of assistive technologies, like a screen reader, when a toggle field does not have an accessible name specified.
ARIA `tooltip` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
ARIA `treeitem` elements have accessible names
Without accessible names on elements, screen readers will default to announcing a generic name, which means your content will be less accessible to users who rely on screen readers.
`[aria-*]` attributes have valid values
ARIA attributes cannot be interpreted with invalid values when used by screen readers and other assistive technologies.
`[aria-*]` attributes are valid and not misspelled
ARIA attributes cannot be interpreted with invalid names when used by screen readers and other assistive technologies.
ARIA IDs are unique
Ensure all ARIA ID values are unique to prevent elements from being overlooked by assistive technologies, like a screen reader.

Names and labels

Buttons have an accessible name
Buttons become unusable as they are announced simply as "button" when the button does not have an accessible name, when used by screen readers and other assistive technologies.
Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
No form fields have multiple labels
Having multiple labels for form fields can be confusing to assistive technologies, like a screen reader.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
`<input type="image">` elements have `[alt]` text
Input buttons with alternative text assist screen readers and other assistive technology users to understand its purpose.
Form elements have associated labels
Screen readers and other assistive technologies rely on labels to properly announce form controls.
Links have a discernible name
In order to improve the navigation for screen reader and other assistive technology users, use link text that is unique, focusable and discernible.
`<object>` elements have `[alt]` text
It is advised that alt text is used on '<object>' elements in order to provide meaning to screen reader and other assistive technology users, as these technologies are unable to translate non-text content.

Tables and lists

`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Screen readers and other assistive technologies may produce poor and inaccurate output when definition lists are not properly marked up.
Definition list items are wrapped in `<dl>` elements
In order for screen readers and other assistive technologies to properly announce definition list items ('<dt>' and '<dd>'), they must be wrapped in parent a '<dl>' element.
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that '<td>' cells using the headers attribute only refer to other cells in the same table, to improve screen reader user experience.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
Screen readers and other assistive technologies have features to make navigating tables easier. Ensure that table headers refer to some set of cells, to improve screen reader user experience.

Internationalization and localization

`<html>` element has a valid value for its `[lang]` attribute
Specify a valid BCP 47 language in order to help screen readers and other assistive technologies announce text properly.
`[lang]` attributes have a valid value
Specify a valid BCP 47 language on elements in order to help screen readers and other assistive technologies announce text properly.

Best practices

The document does not use `<meta http-equiv="refresh">`
Pages that refresh automatically cause a poor user experience as focus is directed back to the top of the page unexpectedly.
`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
For users with low vision who rely on screen magnification, ensure that zooming is not disabled.

Audio and video

`<video>` elements contain a `<track>` element with `[kind="captions"]`
Ebooksworld.ir may provide assistance to deaf or hearing-impaired users with captions on videos.

Contrast

Background and foreground colors do not have a sufficient contrast ratio.
Many (if not most) users find low-contrast text difficult or impossible to read.
Failing Elements
CPP
Css
F#
GIS
IOC
ios
Lua
MEF
MVC
PHP
Qt
SEO
SPA
SQL
UML
WPF
PHP
Css
SPA
SQL

Names and labels

`<frame>` or `<iframe>` elements do not have a title
Screen reader users and other assistive technology users rely on frame titles to describe the contents of frames.
Failing Elements

Navigation

Heading elements are not in a sequentially-descending order
Properly order all headers and do not skip heading levels to better the navigation and readability for users of assistive technologies, like a screen reader.
Failing Elements

Internationalization and localization

`<html>` element does not have a `[lang]` attribute
It is advised to provide a lang attribute so that screen readers and other assistive technologies are guaranteed to announce the page's text correctly. When not provided, the user's default language setting will be used which may cause inaccuracies.
Failing Elements

Tables and lists

Manual Checks

The page has a logical tab order
The visual layout should be logical in its tab order and users cannot focus elements that are offscreen.
Interactive controls are keyboard focusable
Ensure that custom interactive controls are keyboard focusable and that a focus indicator is displayed.
Interactive elements indicate their purpose and state
Ensure that interactive elements (such as links and buttons) are distinguishable from non-interactive elements and that they indicate their state.
The user's focus is directed to new content added to the page
When new content (such as a dialogue) is added to the page, the user's focus should be directed to it.
User focus is not accidentally trapped in a region
Avoid focus being accidentally trapped when a user tabs in and out of controls or regions on page.
Custom controls have associated labels
Ensure that custom interactive controls have associated labels, which are provided by aria-label and aria-labelledby attributes.
Custom controls have ARIA roles
Ensure that all custom interactive controls have appropriate ARIA roles.
Visual order on the page follows DOM order
Ensure that the DOM order matches with the page's visual order, in order to improve navigation for screen readers and other assistive technologies.
Offscreen content is hidden from assistive technology
Ensure that offscreen content is hidden through the use of "display:none" styling or the aria-hidden attribute.
HTML5 landmark elements are used to improve navigation
Elements such as <main> and <nav> are recommended as they are used by screen readers and other assistive technologies to improve keyboard navigation.
80

Best Practices

Indicates the recommended, best practices currently in place on the page and highlights the best practices that ebooksworld.ir should incorporate. This includes practices such as protecting pages with HTTPS.

Audits

Avoids requesting the geolocation permission on page load
When requesting a user's location, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Avoids requesting the notification permission on page load
When requesting permission to send notifications, provide context or consider tying the request to a user action to avoid confusion and mistrust from users.
Ensure CSP is effective against XSS attacks
Significantly reduce the risk of cross-site scripting attacks (XSS) by ensuring you have a strong Content Security Policy (CSP).
Description Directive Severity
No CSP found in enforcement mode
High

Audits

Allows users to paste into password fields
Ensure that password inputs may be pasted into to aid in the user's ability to use password managers and improve security.
Displays images with correct aspect ratio
Ensure that image display dimensions match their natural aspect ratio.
Serves images with appropriate resolution
For maximum image clarity, ensure images have natural dimensions and are proportional to the display size and pixel ratio.
Fonts with `font-display: optional` are preloaded
It is recommended that optional fonts are preloaded.

Audits

Page has the HTML doctype
Ensure a doctype is specified to prevent the browser from switching to quirks-mode.
Properly defines charset
It is advised to declare a character encoding, optionally via a <meta> tag in the first 1024 bytes of the HTML or in the Content-Type HTTP response header.

Audits

Avoids `unload` event listeners
The 'unload' event does not fire reliably, causing issues with browser optimizations such as the Back-Forward Cache. It is recommended that 'pagehide' or 'visibilitychange' events are used instead.
Avoids Application Cache
Application cache is deprecated and is no longer recommended.
Detected JavaScript libraries
Below is a list of all front-end JavaScript libraries that were detected on the page.
Name Version
jQuery
1.9.1
jQuery UI
1.10.2
Avoids deprecated APIs
Avoid deprecated APIs which will eventually be removed the browser.
No browser errors logged to the console
Below is a list of all errors logged to the console, which indicate unresolved problems on the site.
Page has valid source maps
Consider deploying source maps for added benefits such as the ability to debug while in production.
No issues in the `Issues` panel in Chrome Devtools
There may be unresolved issues logged to Chrome Devtools.

Audits

Does not use HTTPS — 1 insecure request found
Ensure that all pages are protected with HTTPS (including those that do not handle sensitive data) as HTTPS prevents tampering and passive listening on communications between the app and its users. Additionally, HTTPS is a prerequisite for HTTP/2 and many new web platform APIs.
Insecure URL Request Resolution
http://ebooksworld.ir/
Allowed
Includes front-end JavaScript libraries with known security vulnerabilities — 5 vulnerabilities detected
Ensure that the use of third-party scripts is minimal and that only trusted third-party scripts are used as some may contain known security vulnerabilities which may be exploited by attackers.
Library Version Vulnerability Count Highest Severity
4
Medium
1
High
80

SEO

Indicates how well the page is optimized for ranking in search engines and highlights Search Engine Optimization (SEO) opportunities for ebooksworld.ir. This includes optimizations such as providing meta data.

Mobile Friendly

Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of ebooksworld.ir on mobile screens.
Document uses legible font sizes — 99.96% legible text
Font sizes of 12px or less are too small to most mobile users without user gestures and further action. Aim for more than 60% of page text to use font sizes greater than 12px.
Source Selector % of Page Text Font Size
.btn-small
0.03%
11.9px
.countdown .count-title
0.00%
10px
label, input, button, select, textarea
0.00%
11.844px
.input-append, .input-prepend
0.00%
0px
99.96%
≥ 12px

Content Best Practices

Document has a `<title>` element
Search engines, screen reader users and other assistive technology users rely on the title to provide an overview of the page and to help determine if the page is relevant to their search.
Links have descriptive text
Make use of descriptive link text to assist search engines in understanding the content.
Image elements have `[alt]` attributes
Provide short and descriptive alternative text where possible on informative elements.
Document has a valid `hreflang`
Search engines can be instructed to list specific versions of a page for a given language or region through the use of hreflang links.
Document has a valid `rel=canonical`
Search engines can be suggested which URL should be shown in search results through the use of canonical links.
Document avoids plugins
The content of plugins cannot be indexed by search engines and many devices either restrict or do not support them.

Crawling and Indexing

Page has successful HTTP status code
Avoid pages with unsuccessful HTTP status codes as they may not be indexed by search engines.
Page isn’t blocked from indexing
Pages that cannot be crawled by search engines cannot be indexed or included in their search results. Ensure that search engines have permission to crawl all pages that should be indexed.
robots.txt is valid
Malformed robots.txt files prevent crawlers from understanding how a site wants to be crawled or indexed, which can be devastating to SEO.

Content Best Practices

Document does not have a meta description
Meta descriptions may be used by search engines when displaying a link to the page and should concisely summarize the page's content.

Crawling and Indexing

Links are not crawlable
Ensure that the 'href' attribute of anchor elements links to the appropriate destination. This allows for more pages of the site to be discovered by search engines.

Mobile Friendly

Tap targets are not sized appropriately — 40% appropriately sized tap targets
Interactive elements (such as buttons and links) should be appropriately spaced, sized and easy enough to select or tap with regard to their surrounding elements.
Tap Target Size Overlapping Target
Css
20x19
26x19
C
8x19
26x19
51x19
Css
20x19
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
C
C
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
CPP
CPP
318x26
318x26
318x26
Css
Css
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
F#
F#
318x26
318x26
318x26
318x26
318x26
GIS
GIS
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
IOC
IOC
318x26
318x26
ios
ios
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
Lua
Lua
318x26
318x26
318x26
318x26
318x26
MEF
MEF
318x26
318x26
318x26
318x26
MVC
MVC
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
PHP
PHP
318x26
318x26
318x26
318x26
318x26
Qt
Qt
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
SEO
SEO
318x26
318x26
318x26
318x26
318x26
318x26
SPA
SPA
318x26
318x26
SQL
SQL
318x26
318x26
318x26
318x26
318x26
318x26
318x26
UML
UML
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
318x26
WPF
WPF
318x26
318x26
318x26
SQL
22x19
Css
20x19
SPA
23x19
26x19
127x21
SQL
22x19
30x19
31x19
31x19
31x19
31x19
31x19
SPA
23x19
SPA
23x19
30x19
PHP
24x19
PHP
24x19

Manual Checks

Structured data is valid
Structured data can be validated through the use of the Structured Data Testing Tool and the Structured Data Linter.
50

Progressive Web App

Indicates how valid the aspects of a Progressive Web App (PWA) are for the page and highlights opportunities to enable/improve the PWA of ebooksworld.ir. This includes details about web app manifests.

PWA Optimized

Redirects HTTP traffic to HTTPS
It is advised to redirect all HTTP traffic to HTTPS, in order to enable secure web features for all users.
Content is sized correctly for the viewport
Ensure that the width of the app's content matches the width of the viewport, otherwise the app might not be optimized for mobile screens.
Has a `<meta name="viewport">` tag with `width` or `initial-scale`
It is advised to use a '<meta name="viewport">' tag for the optimization of ebooksworld.ir on mobile screens.
Provides a valid `apple-touch-icon`
iOS users of Progressive Web Apps will benefit from an apple touch icon, which can be defined with 'apple-touch-icon', which must point to a non-transparent 192px (or 180px) square PNG.

Installable

Web app manifest or service worker do not meet the installability requirements — 1 reason
User engagement may be increased by leveraging the browsers ability to proactively prompt users to add the app to their homescreen.
Failure reason
No manifest was fetched

PWA Optimized

Does not register a service worker that controls page and `start_url`
A service worker is used to provide Progressive Web Apps the use of features such as working offline, the ability for the app to be added to the homescreen as well as push notifications.
Is not configured for a custom splash screen
Themed splash screens ensure a high-quality user experience at launch for app users.
View Data
Does not set a theme color for the address bar.
A theme may be applied to the browser address bar, which ideally can be made to match the site.
View Data
Manifest doesn't have a maskable icon
Maskable icons are great to ensure that images fill the entire shape when installing the app on a device.

Manual Checks

Site works cross-browser
Ensure that the Progressive Web App works correctly across every major browser.
Page transitions don't feel like they block on the network
Users perceive apps with responsive, snappy transitions as higher peforming and ensures a great user experience, even on a slow network.
Each page has a URL
Ensure that all pages are deep linkable via URL. They should also be unique for the purpose of shareability on social media.
Hosting

Server Location

Server IP Address: 172.67.184.252
Continent: North America
Country: United States
United States Flag
Region:
City:
Longitude: -97.822
Latitude: 37.751
Currencies: USD
USN
USS
Languages: English

Web Hosting Provider

Name IP Address
Cloudflare, Inc.
Registration

Domain Registrant

Private Registration: No
Name:
Organization:
Country:
City:
State:
Post Code:
Email:
Phone:
Note: Registration information is derived from various sources and may be inaccurate.

Domain Registrar

Security

Visitor Safety

Mature Content: Not Likely
McAfee WebAdvisor Rating: Safe
WOT Rating:
WOT Trustworthiness:
WOT Child Safety:
Note: Safety information is not guaranteed.

SSL/TLS Certificate

Issued To: *.ebooksworld.ir
Issued By: R3
Valid From: 3rd October, 2021
Valid To: 1st January, 2022
Subject: CN = *.ebooksworld.ir
Hash: 6938071f
Issuer: CN = R3
O = Let's Encrypt
S = US
Version: 2
Serial Number: 0x04030E64B6D76690E53D932D47DE303D713E
Serial Number (Hex): 04030E64B6D76690E53D932D47DE303D713E
Valid From: 3rd October, 2024
Valid To: 1st January, 2024
Signature Algorithm (Short Name): RSA-SHA256
Signature Algorithm (Long Name): sha256WithRSAEncryption
Authority Key Identifier: keyid:14:2E:B3:17:B7:58:56:CB:AE:50:09:40:E6:1F:AF:9D:8B:14:C2:C6
Extended Key Usage: TLS Web Server Authentication, TLS Web Client Authentication
Certificate Policies: Policy: 2.23.140.1.2.1
Policy: 1.3.6.1.4.1.44947.1.1.1
CPS: http://cps.letsencrypt.org

Authority Information Access: OCSP - URI:http://r3.o.lencr.org
CA Issuers - URI:http://r3.i.lencr.org/

SCT List: Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : DF:A5:5E:AB:68:82:4F:1F:6C:AD:EE:B8:5F:4E:3E:5A:
EA:CD:A2:12:A4:6A:5E:8E:3B:12:C0:20:44:5C:2A:73
Timestamp : Oct 3 14:45:39.099 2021 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:93:94:43:97:4B:BD:72:BE:14:A3:53:
D5:AF:B9:DB:75:69:EE:3D:65:27:F1:AA:72:D1:6B:A1:
EA:B0:6A:45:96:02:20:35:2A:7F:D4:17:4A:2F:32:A3:
0E:1B:AD:2C:4A:33:AD:94:9A:35:57:E3:D7:97:BC:4D:
67:3A:30:82:E3:7F:E5
Signed Certificate Timestamp:
Version : v1 (0x0)
Log ID : 46:A5:55:EB:75:FA:91:20:30:B5:A2:89:69:F4:F3:7D:
11:2C:41:74:BE:FD:49:B8:85:AB:F2:FC:70:FE:6D:47
Timestamp : Oct 3 14:45:39.631 2021 GMT
Extensions: none
Signature : ecdsa-with-SHA256
30:45:02:21:00:80:A9:01:BC:42:9F:20:91:75:D1:B7:
92:76:E4:51:42:0C:E9:B1:2B:29:31:06:C0:BD:C6:B8:
54:9A:DD:89:C0:02:20:4E:56:9F:24:64:E5:8E:FB:98:
46:E9:10:25:F2:A2:1B:9E:16:EC:38:DB:43:84:30:77:
1D:F8:D0:D7:7E:B0:BA
Key Usage: Digital Signature
Basic Constraints: CA:FALSE
Subject Alternative Name: DNS:ebooksworld.ir
DNS:*.ebooksworld.ir
Technical

DNS Lookup

HTTP Response Headers

HTTP-Code: HTTP/1.1 403 Forbidden
Date: 6th October, 2021
Content-Type: text/plain; charset=UTF-8
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: 1st January, 1970
Server: cloudflare
Content-Length: 16
Connection: keep-alive
X-Frame-Options: SAMEORIGIN
Referrer-Policy: same-origin
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v3?s=SaLM5PbC9Rt9qXp8y5oRfnuFjSqWEqHVfw9n2TTXletfh6EIbD7pC%2Bp4poKOpZ25GwKn1h6kDDCHY2p2CQLtkl8HyEjvUQ%2F9rnZdM96PB3rtomWd4dks310HI76erErw2g%3D%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
CF-RAY: 699f560fa933175c-EWR
alt-svc: h3=":443"; ma=86400, h3-29=":443"; ma=86400, h3-28=":443"; ma=86400, h3-27=":443"; ma=86400

Whois Lookup

Created:
Changed:
Expires:
Status:
Nameservers: kia.ns.cloudflare.com
vasilii.ns.cloudflare.com
Owner Name: mehdi saeedifar
Owner Phone: 09358506424
Owner Email: saeedifarmehdi@gmail.com
Admin Organization: ertebatat netmihan
Admin Phone: +981333226666
Admin Fax: +981333226666
Admin Email: lir@mihanwebhost.com
Tech Organization: ertebatat netmihan
Tech Phone: +981333226666
Tech Fax: +981333226666
Tech Email: lir@mihanwebhost.com
Full Whois: % This is the IRNIC Whois server v1.6.2.
% Available on web at http://whois.nic.ir/
% Find the terms and conditions of use on http://www.nic.ir/
%
% This server uses UTF-8 as the encoding for requests and responses.

% NOTE: This output has been filtered.

% Information related to 'ebooksworld.ir'


domain: ebooksworld.ir
ascii: ebooksworld.ir
remarks: (Domain Holder) mehdi saeedifar
remarks: (Domain Holder Address) esfahn, esfahan, esfahan, IR
holder-c: ms3504-irnic
admin-c: er1229-irnic
tech-c: er1229-irnic
bill-c: er1229-irnic
nserver: kia.ns.cloudflare.com
nserver: vasilii.ns.cloudflare.com
last-updated: 2021-06-07
expire-date: 2024-04-08
source: IRNIC # Filtered

nic-hdl: ms3504-irnic
person: mehdi saeedifar
e-mail: saeedifarmehdi@gmail.com
address: esfahn, esfahan, esfahan, IR
phone: 09358506424
source: IRNIC # Filtered

nic-hdl: er1229-irnic
org: ertebatat netmihan
e-mail: lir@mihanwebhost.com
address: Unit 9,Floor 3,Mahtab Bldg,Mahtab Alley, Ostad Sara St,Sabzeh meidanRasht, rasht, gilan, IR
phone: +981333226666
fax-no: +981333226666
source: IRNIC # Filtered

Nameservers

Name IP Address
kia.ns.cloudflare.com 172.64.32.179
vasilii.ns.cloudflare.com 172.64.35.26
Related

Subdomains

Similar Sites

Organic Search (US) Competitors

Backlink Competitors

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Domain Valuation Snoop Score
$10 USD
0/5

Sites hosted on the same IP address

Domain Valuation Snoop Score
$2,843 USD 2/5