Tools & Wizards About Us
velizy-villacoublay.fr screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

velizy-villacoublay.fr

Accueil - Ville de Vélizy-Villacoublay

Page Load Speed

3.6 sec in total

First Response

295 ms

Resources Loaded

2.9 sec

Page Rendered

400 ms

velizy-villacoublay.fr screenshot

About Website

Click here to check amazing Velizy Villacoublay content for France. Otherwise, check out these important facts you probably never knew about velizy-villacoublay.fr

Site officiel. Informations pratiques: démarches administratives, enfance et jeunesse, action sociale, entreprises, emploi, associations, culture, sports et loisirs

Visit velizy-villacoublay.fr

Key Findings

We analyzed Velizy-villacoublay.fr page load time and found that the first response time was 295 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

velizy-villacoublay.fr performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value16.2 s

0/100

25%

SI (Speed Index)

Value13.9 s

1/100

10%

TBT (Total Blocking Time)

Value1,740 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value22.9 s

1/100

10%

Network Requests Diagram

velizy-villacoublay.fr

295 ms

www.velizy-villacoublay.fr

1085 ms

css2

39 ms

css2

55 ms

angular.min.js

30 ms

Our browser made a total of 115 requests to load all elements on the main page. We found that 57% of them (66 requests) were addressed to the original Velizy-villacoublay.fr, 9% (10 requests) were made to Static.xx.fbcdn.net and 9% (10 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Velizy-villacoublay.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (40%)

Content Size

2.9 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Velizy-villacoublay.fr main page is 2.9 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. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 135.8 kB

  • Original 153.8 kB
  • After minification 92.1 kB
  • After compression 18.1 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. This page needs HTML code to be minified as it can gain 61.8 kB, which is 40% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 135.8 kB or 88% of the original size.

Image Optimization

-21%

Potential reduce by 277.5 kB

  • Original 1.3 MB
  • After minification 1.1 MB

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. Obviously, Velizy Villacoublay needs image optimization as it can save up to 277.5 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-49%

Potential reduce by 576.4 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 588.5 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 576.4 kB or 49% of the original size.

CSS Optimization

-75%

Potential reduce by 165.5 kB

  • Original 220.9 kB
  • After minification 187.9 kB
  • After compression 55.4 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. Velizy-villacoublay.fr needs all CSS files to be minified and compressed as it can save up to 165.5 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 70 (69%)

Requests Now

102

After Optimization

32

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 102 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Velizy Villacoublay. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 36 to 1 for JavaScripts and from 26 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

velizy-villacoublay.fr

velizy-villacoublay.fr

295 ms

www.velizy-villacoublay.fr

www.velizy-villacoublay.fr

1085 ms

css2

css2

39 ms

css2

css2

55 ms

angular.min.js

angular.min.js

30 ms

jquery-1.12.4.min.js

jquery-1.12.4.min.js

440 ms

jquery-ui.min.js

jquery-ui.min.js

643 ms

datepicker-fr.js

datepicker-fr.js

278 ms

jquery-ui.css

jquery-ui.css

370 ms

jquery.qtip.min.js

jquery.qtip.min.js

376 ms

jquery.qtip.min.css

jquery.qtip.min.css

348 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

460 ms

jquery.bxslider.css

jquery.bxslider.css

436 ms

jquery.fancybox.css

jquery.fancybox.css

461 ms

jquery.fancybox.pack.js

jquery.fancybox.pack.js

467 ms

video-js.min.css

video-js.min.css

524 ms

videojs-ie8.min.js

videojs-ie8.min.js

525 ms

select2.min.css

select2.min.css

550 ms

select2.full.min.js

select2.full.min.js

679 ms

router.js

router.js

558 ms

routing

routing

686 ms

jquery.validate.min.js

jquery.validate.min.js

20 ms

norm.css

norm.css

612 ms

main.css

main.css

677 ms

home.css

home.css

684 ms

liste.css

liste.css

700 ms

page.css

page.css

729 ms

article.css

article.css

731 ms

bxslider.css

bxslider.css

732 ms

pagerfantaDefault.css

pagerfantaDefault.css

740 ms

espace.css

espace.css

743 ms

responsive.css

responsive.css

820 ms

tab768.css

tab768.css

822 ms

tab640.css

tab640.css

824 ms

smart.css

smart.css

831 ms

ReadSpeaker.js

ReadSpeaker.js

569 ms

sdk.js

sdk.js

23 ms

platform.js

platform.js

36 ms

api.js

api.js

41 ms

video.min.js

video.min.js

886 ms

scroll.js

scroll.js

660 ms

menu.js

menu.js

661 ms

platform.js

platform.js

33 ms

ReadSpeaker.Styles.css

ReadSpeaker.Styles.css

105 ms

ReadSpeaker.Core.js

ReadSpeaker.Core.js

256 ms

ReadSpeaker.pub.Config.js

ReadSpeaker.pub.Config.js

331 ms

velizy-villacoublay.png

velizy-villacoublay.png

90 ms

demarches_ligne.png

demarches_ligne.png

91 ms

velizy_villacoublay_logo.png

velizy_villacoublay_logo.png

184 ms

ic_rapide.png

ic_rapide.png

96 ms

ic_rech.png

ic_rech.png

96 ms

villes-Villages.png

villes-Villages.png

96 ms

S6u9w4BMUTPHh6UVew8.ttf

S6u9w4BMUTPHh6UVew8.ttf

48 ms

S6u9w4BMUTPHh50Xew8.ttf

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49 ms

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78 ms

S6u9w4BMUTPHh7USew8.ttf

S6u9w4BMUTPHh7USew8.ttf

79 ms

rect_actu.png

rect_actu.png

169 ms

thumb_16672_default_big.jpeg

thumb_16672_default_big.jpeg

202 ms

thumb_16602_default_big.jpeg

thumb_16602_default_big.jpeg

289 ms

fl_rouge.png

fl_rouge.png

200 ms

thumb_16608_default_big.jpeg

thumb_16608_default_big.jpeg

259 ms

rect_agenda.png

rect_agenda.png

288 ms

ic_agenda.png

ic_agenda.png

287 ms

fl_vert.png

fl_vert.png

288 ms

rect_facebook.png

rect_facebook.png

288 ms

rect_instagram.png

rect_instagram.png

429 ms

sdk.js

sdk.js

17 ms

carte.png

carte.png

598 ms

fl_jaune.png

fl_jaune.png

421 ms

magazine_municipal.png

magazine_municipal.png

385 ms

thumb_16495_default_big.jpeg

thumb_16495_default_big.jpeg

422 ms

thumb_16334_default_big.jpeg

thumb_16334_default_big.jpeg

507 ms

thumb_16168_default_big.jpeg

thumb_16168_default_big.jpeg

597 ms

thumb_15974_default_big.jpeg

thumb_15974_default_big.jpeg

599 ms

fl_bleu.png

fl_bleu.png

510 ms

recaptcha__fr.js

recaptcha__fr.js

56 ms

newsletter_valid.png

newsletter_valid.png

500 ms

fl_orange.png

fl_orange.png

528 ms

mairie_info.png

mairie_info.png

591 ms

rs_instagram.png

rs_instagram.png

591 ms

rs_twitter.png

rs_twitter.png

617 ms

rs_facebook.png

rs_facebook.png

674 ms

rs_linkedin.png

rs_linkedin.png

674 ms

61 ms

ReadSpeaker.lib.Facade.adapter.jquery.js

ReadSpeaker.lib.Facade.adapter.jquery.js

105 ms

analytics.js

analytics.js

55 ms

fallback

fallback

45 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4n.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4n.ttf

12 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4n.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4n.ttf

15 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4n.ttf

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16 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1y4n.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1y4n.ttf

45 ms

288 ms

page.php

page.php

82 ms

page.php

page.php

198 ms

collect

collect

19 ms

fallback__ltr.css

fallback__ltr.css

8 ms

css

css

17 ms

js

js

44 ms

ReadSpeaker.Base.js

ReadSpeaker.Base.js

226 ms

logo_48.png

logo_48.png

3 ms

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KFOmCnqEu92Fr1Mu4mxP.ttf

5 ms

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8 ms

YSVNzQMiK3c.css

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14 ms

VWDhCULazb5.js

VWDhCULazb5.js

82 ms

o1ndYS2og_B.js

o1ndYS2og_B.js

120 ms

mP12tTiNgO_.js

mP12tTiNgO_.js

121 ms

5xOV5e9oy4e.js

5xOV5e9oy4e.js

122 ms

owo2sPJxB2z.js

owo2sPJxB2z.js

127 ms

p55HfXW__mM.js

p55HfXW__mM.js

121 ms

k_PjgALRjoR.js

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127 ms

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347121010_1217603045536098_5303854279455872610_n.png

89 ms

W80NoecdQTY.js

W80NoecdQTY.js

58 ms

UXtr_j2Fwe-.png

UXtr_j2Fwe-.png

19 ms

instashow.js

instashow.js

30 ms

print.css

print.css

91 ms

Accessibility Review

velizy-villacoublay.fr accessibility score

94

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.

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

velizy-villacoublay.fr best practices score

67

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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

velizy-villacoublay.fr SEO score

97

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Velizy-villacoublay.fr 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 Velizy-villacoublay.fr 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

velizy-villacoublay.fr

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