Tools & Wizards About Us
exelib.net screenshot

Report Summary

  • 6

    Performance

    Renders faster than
    21% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 80% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

exelib.net

Cours et Exercices Corrigés en Informatique - ExeLibrary

Page Load Speed

8.5 sec in total

First Response

101 ms

Resources Loaded

8 sec

Page Rendered

420 ms

exelib.net screenshot

About Website

Visit exelib.net now to see the best up-to-date Exe Lib content for Morocco and also check out these interesting facts you probably never knew about exelib.net

exelib.net est un service d'apprentissage de l'informatique par la pratique grâce à des supports de cours et des exercices et examens corrigés.

Visit exelib.net

Key Findings

We analyzed Exelib.net page load time and found that the first response time was 101 ms and then it took 8.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

exelib.net performance score

6

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value10.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.1 s

0/100

25%

SI (Speed Index)

Value19.4 s

0/100

10%

TBT (Total Blocking Time)

Value3,990 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.318

36/100

15%

TTI (Time to Interactive)

Value21.0 s

1/100

10%

Network Requests Diagram

exelib.net

101 ms

www.exelib.net

1554 ms

sc_bootstrap.css

28 ms

common.css

41 ms

jquery-ui-1.9.2.css

2039 ms

Our browser made a total of 144 requests to load all elements on the main page. We found that 78% of them (112 requests) were addressed to the original Exelib.net, 8% (12 requests) were made to Googleads.g.doubleclick.net and 5% (7 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Exelib.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 421.3 kB (28%)

Content Size

1.5 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Exelib.net main page is 1.5 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 105.8 kB

  • Original 126.3 kB
  • After minification 119.8 kB
  • After compression 20.5 kB

HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 105.8 kB or 84% of the original size.

Image Optimization

-1%

Potential reduce by 2.1 kB

  • Original 255.4 kB
  • After minification 253.2 kB

Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Exe Lib images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 292.4 kB

  • Original 1.0 MB
  • After minification 1.0 MB
  • After compression 739.0 kB

It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 292.4 kB or 28% of the original size.

CSS Optimization

-19%

Potential reduce by 21.0 kB

  • Original 108.9 kB
  • After minification 108.9 kB
  • After compression 87.9 kB

CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Exelib.net needs all CSS files to be minified and compressed as it can save up to 21.0 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 79 (56%)

Requests Now

141

After Optimization

62

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 141 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Exe Lib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 50 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

exelib.net

exelib.net

101 ms

www.exelib.net

www.exelib.net

1554 ms

sc_bootstrap.css

sc_bootstrap.css

28 ms

common.css

common.css

41 ms

jquery-ui-1.9.2.css

jquery-ui-1.9.2.css

2039 ms

select2.css

select2.css

2042 ms

exelib-login.css

exelib-login.css

37 ms

mootools-core.js

mootools-core.js

57 ms

core.js

core.js

47 ms

mootools-more.js

mootools-more.js

94 ms

scrolltotop_mt.js

scrolltotop_mt.js

60 ms

jfbconnect.js

jfbconnect.js

2078 ms

jq-bootstrap-1.8.3.js

jq-bootstrap-1.8.3.js

115 ms

copylink.js

copylink.js

80 ms

jquery.min.js

jquery.min.js

130 ms

jquery-noconflict.js

jquery-noconflict.js

128 ms

jquery-migrate.min.js

jquery-migrate.min.js

142 ms

jquery.ui.core.min.js

jquery.ui.core.min.js

148 ms

jquery.ui.sortable.min.js

jquery.ui.sortable.min.js

152 ms

jquery.ui.dialog.min.js

jquery.ui.dialog.min.js

164 ms

jquery.ui.menu.min.js

jquery.ui.menu.min.js

170 ms

jquery.ui.autocomplete.min.js

jquery.ui.autocomplete.min.js

171 ms

jquery.ui.progressbar.min.js

jquery.ui.progressbar.min.js

188 ms

flexi-lib.js

flexi-lib.js

195 ms

select2.min.js

select2.min.js

194 ms

select2.sortable.js

select2.sortable.js

208 ms

select2_locale_fr.js

select2_locale_fr.js

213 ms

tmpl-common.js

tmpl-common.js

213 ms

jquery-easing.js

jquery-easing.js

228 ms

bootstrap.css

bootstrap.css

242 ms

theme.css

theme.css

240 ms

custom.css

custom.css

249 ms

jquery.bxslider.css

jquery.bxslider.css

258 ms

prettify.css

prettify.css

259 ms

file_tree.css

file_tree.css

269 ms

uikit.js

uikit.js

285 ms

autocomplete.js

autocomplete.js

283 ms

js

js

73 ms

adsbygoogle.js

adsbygoogle.js

117 ms

module.css

module.css

292 ms

flexicontent.css

flexicontent.css

283 ms

flexicontent.css

flexicontent.css

271 ms

search.js

search.js

281 ms

social.js

social.js

281 ms

sticky.js

sticky.js

278 ms

theme.js

theme.js

283 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

267 ms

prettify.js

prettify.js

262 ms

exelib.js

exelib.js

249 ms

file_tree.js

file_tree.js

242 ms

TextAreaResizer.min.js

TextAreaResizer.min.js

244 ms

roboto.css

roboto.css

2021 ms

robotocondensed.css

robotocondensed.css

2038 ms

fbevents.js

fbevents.js

102 ms

exelib-05042016.png

exelib-05042016.png

2114 ms

icon_label.png

icon_label.png

2115 ms

icon_label.png

icon_label.png

99 ms

logo-small.png

logo-small.png

98 ms

langage-c-icon-128.png

langage-c-icon-128.png

98 ms

langage-cpp-icon-128.png

langage-cpp-icon-128.png

99 ms

java-icon-128.png

java-icon-128.png

102 ms

csharp-pe-icon-128.png

csharp-pe-icon-128.png

103 ms

csharp-poo-icon-128.png

csharp-poo-icon-128.png

101 ms

arduino-icon-128.png

arduino-icon-128.png

100 ms

html-icon-128.png

html-icon-128.png

159 ms

css-icon-128.png

css-icon-128.png

159 ms

javascript-icon-128.png

javascript-icon-128.png

160 ms

php-icon-128.png

php-icon-128.png

160 ms

asp-net-icon-128.png

asp-net-icon-128.png

162 ms

hibernate-icon-128.png

hibernate-icon-128.png

160 ms

jsp-icon-128.png

jsp-icon-128.png

162 ms

jsf-icon-128.png

jsf-icon-128.png

161 ms

merise-icon-128.png

merise-icon-128.png

162 ms

uml-icon-128.png

uml-icon-128.png

162 ms

sql-icon-128.png

sql-icon-128.png

163 ms

challenge-icon-128.png

challenge-icon-128.png

163 ms

architecture-d-un-ordinateur-icon-128.png

architecture-d-un-ordinateur-icon-128.png

194 ms

linux-icon-128.png

linux-icon-128.png

194 ms

windows-icon-128.png

windows-icon-128.png

193 ms

ado-net-icon-128.png

ado-net-icon-128.png

194 ms

java-avance-icon-128.png

java-avance-icon-128.png

195 ms

introduction-aux-reseaux-icon-128.png

introduction-aux-reseaux-icon-128.png

195 ms

routage-icon-128.png

routage-icon-128.png

196 ms

commutation-icon-128.png

commutation-icon-128.png

197 ms

technologies-wan-icon-128.png

technologies-wan-icon-128.png

207 ms

securite-des-reseaux-icon-128.png

securite-des-reseaux-icon-128.png

241 ms

examens-tdi-icon-128.png

examens-tdi-icon-128.png

242 ms

examens-tri-icon-128.png

examens-tri-icon-128.png

557 ms

examens-crjj-icon-128.png

examens-crjj-icon-128.png

557 ms

exercices-plus-icon-128.png

exercices-plus-icon-128.png

489 ms

exercices-icon-96.png

exercices-icon-96.png

463 ms

cours-icon-96.png

cours-icon-96.png

464 ms

examen-icon-96.png

examen-icon-96.png

465 ms

all.js

all.js

59 ms

programmation-icon-64.png

programmation-icon-64.png

462 ms

developpement-web-icon-64.png

developpement-web-icon-64.png

460 ms

conception-icon-64.png

conception-icon-64.png

462 ms

bases-de-donnees-icon-64.png

bases-de-donnees-icon-64.png

462 ms

bureautique-icon-64.png

bureautique-icon-64.png

406 ms

developpement-mobile-icon-64.png

developpement-mobile-icon-64.png

405 ms

challenge-icon-48.png

challenge-icon-48.png

405 ms

administration-systemes-icon-64.png

administration-systemes-icon-64.png

404 ms

programmation-client-serveur-icon-64.png

programmation-client-serveur-icon-64.png

405 ms

reseaux-informatiques-icon-128.png

reseaux-informatiques-icon-128.png

404 ms

langage-c-icon-48.png

langage-c-icon-48.png

403 ms

cpp-icon-48.png

cpp-icon-48.png

404 ms

java-icon-48.png

java-icon-48.png

403 ms

csharp-icon-48.png

csharp-icon-48.png

404 ms

html-icon-48.png

html-icon-48.png

403 ms

examens-tdi-icon-48.png

examens-tdi-icon-48.png

403 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

403 ms

all.js

all.js

14 ms

examens-crjj-icon-48.png

examens-crjj-icon-48.png

372 ms

show_ads_impl.js

show_ads_impl.js

367 ms

scroll-to-top.png

scroll-to-top.png

69 ms

bx_loader.gif

bx_loader.gif

70 ms

controls.png

controls.png

69 ms

zrt_lookup.html

zrt_lookup.html

25 ms

ads

ads

401 ms

ads

ads

347 ms

ads

ads

414 ms

ads

ads

613 ms

glyphicons-halflings-white.png

glyphicons-halflings-white.png

30 ms

reactive_library.js

reactive_library.js

317 ms

ads

ads

404 ms

ads

ads

394 ms

ads

ads

392 ms

ads

ads

391 ms

ads

ads

391 ms

8538202853855099715

8538202853855099715

331 ms

load_preloaded_resource.js

load_preloaded_resource.js

71 ms

abg_lite.js

abg_lite.js

70 ms

window_focus.js

window_focus.js

70 ms

qs_click_protection.js

qs_click_protection.js

75 ms

ufs_web_display.js

ufs_web_display.js

17 ms

d4128ee657a8b8f36370500b7756be30.js

d4128ee657a8b8f36370500b7756be30.js

49 ms

fullscreen_api_adapter.js

fullscreen_api_adapter.js

65 ms

interstitial_ad_frame.js

interstitial_ad_frame.js

198 ms

b77b256f0501e7c4881e67f893054266.js

b77b256f0501e7c4881e67f893054266.js

34 ms

81196163ce699cdb540b74c0ac9d4337.js

81196163ce699cdb540b74c0ac9d4337.js

41 ms

icon.png

icon.png

29 ms

feedback_grey600_24dp.png

feedback_grey600_24dp.png

56 ms

settings_grey600_24dp.png

settings_grey600_24dp.png

191 ms

s

s

260 ms

Accessibility Review

exelib.net accessibility score

93

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Links do not have a discernible name

Best Practices

exelib.net best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

exelib.net SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Mobile Friendly

Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).

Impact

Issue

High

Document uses legible font sizes

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    FR

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Exelib.net can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it matches the claimed language. Our system also found out that Exelib.net main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.

Social Sharing Optimization

exelib.net

Open Graph data is detected on the main page of Exe Lib. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: