Tools & Wizards About Us
lavue.cnrs.fr screenshot

Report Summary

  • 53

    Performance

    Renders faster than
    70% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

lavue.cnrs.fr

LAVUE - Laboratoire Architecture Ville Urbanisme Environnement (UMR 7218 CNRS)

Page Load Speed

2.7 sec in total

First Response

331 ms

Resources Loaded

2.2 sec

Page Rendered

179 ms

lavue.cnrs.fr screenshot

About Website

Click here to check amazing LAVUE CNRS content for France. Otherwise, check out these important facts you probably never knew about lavue.cnrs.fr

Le LAVUE est un laboratoire de recherche en sciences sociales sur l'urbanisme. C'est une unité mixte de recherche (UMR) du CNRS créée en 2010.

Visit lavue.cnrs.fr

Key Findings

We analyzed Lavue.cnrs.fr page load time and found that the first response time was 331 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

lavue.cnrs.fr performance score

53

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.6 s

2/100

10%

LCP (Largest Contentful Paint)

Value7.3 s

5/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value50 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.081

94/100

15%

TTI (Time to Interactive)

Value7.4 s

49/100

10%

Network Requests Diagram

lavue.cnrs.fr

331 ms

www.lavue.cnrs.fr

803 ms

spip.css

242 ms

medias_responsive.css

245 ms

lity.css

247 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 65% of them (24 requests) were addressed to the original Lavue.cnrs.fr, 24% (9 requests) were made to Fonts.gstatic.com and 11% (4 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (803 ms) belongs to the original domain Lavue.cnrs.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 376.8 kB (77%)

Content Size

491.1 kB

After Optimization

114.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lavue.cnrs.fr main page is 491.1 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 30% of websites need less resources to load. Javascripts take 305.9 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 45.5 kB

  • Original 57.7 kB
  • After minification 53.5 kB
  • After compression 12.2 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 45.5 kB or 79% of the original size.

Image Optimization

-27%

Potential reduce by 869 B

  • Original 3.3 kB
  • After minification 2.4 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. Obviously, LAVUE CNRS needs image optimization as it can save up to 869 B or 27% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 223.9 kB

  • Original 305.9 kB
  • After minification 305.9 kB
  • After compression 82.0 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 223.9 kB or 73% of the original size.

CSS Optimization

-86%

Potential reduce by 106.5 kB

  • Original 124.3 kB
  • After minification 96.4 kB
  • After compression 17.8 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. Lavue.cnrs.fr needs all CSS files to be minified and compressed as it can save up to 106.5 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 17 (65%)

Requests Now

26

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of LAVUE CNRS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lavue.cnrs.fr

lavue.cnrs.fr

331 ms

www.lavue.cnrs.fr

www.lavue.cnrs.fr

803 ms

spip.css

spip.css

242 ms

medias_responsive.css

medias_responsive.css

245 ms

lity.css

lity.css

247 ms

lity.mediabox.css

lity.mediabox.css

243 ms

lity.css

lity.css

248 ms

barre_outils.css

barre_outils.css

246 ms

cssdyn-css_barre_outils_icones_css-a96d83be.css

cssdyn-css_barre_outils_icones_css-a96d83be.css

328 ms

typo_guillemets.css

typo_guillemets.css

329 ms

html5_responsive.css

html5_responsive.css

329 ms

image_responsive.css

image_responsive.css

330 ms

a19a336cf9e77180a3427e25b7d06636.js

a19a336cf9e77180a3427e25b7d06636.js

646 ms

hamburgers.css

hamburgers.css

411 ms

lavue.css

lavue.css

416 ms

lavue_screen.css

lavue_screen.css

413 ms

css2

css2

42 ms

css

css

59 ms

css

css

64 ms

css2

css2

65 ms

logo-lavue.gif

logo-lavue.gif

105 ms

rien.gif

rien.gif

105 ms

icons8-clipboard-50-2.png

icons8-clipboard-50-2.png

105 ms

icons8-communication-16.png

icons8-communication-16.png

105 ms

icons8-email-open-50.png

icons8-email-open-50.png

104 ms

icons8-stack-of-paper-50.png

icons8-stack-of-paper-50.png

104 ms

icons8-contact-us-50.png

icons8-contact-us-50.png

189 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4k.woff

44 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4k.woff

64 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1y4k.woff

91 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1y4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1y4k.woff

92 ms

5aUt9_-1phKLFgshYDvh6Vwt5Tldv21V.woff

5aUt9_-1phKLFgshYDvh6Vwt5Tldv21V.woff

91 ms

5aUz9_-1phKLFgshYDvh6Vwt7Vptuw.woff

5aUz9_-1phKLFgshYDvh6Vwt7Vptuw.woff

91 ms

5aUu9_-1phKLFgshYDvh6Vwt5alOqEp2jQ.woff

5aUu9_-1phKLFgshYDvh6Vwt5alOqEp2jQ.woff

91 ms

5aUu9_-1phKLFgshYDvh6Vwt5eFIqEp2jQ.woff

5aUu9_-1phKLFgshYDvh6Vwt5eFIqEp2jQ.woff

68 ms

5aUu9_-1phKLFgshYDvh6Vwt5f1LqEp2jQ.woff

5aUu9_-1phKLFgshYDvh6Vwt5f1LqEp2jQ.woff

91 ms

lavue_print.css

lavue_print.css

87 ms

Accessibility Review

lavue.cnrs.fr accessibility score

95

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

lavue.cnrs.fr best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

lavue.cnrs.fr SEO score

100

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

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 Lavue.cnrs.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 Lavue.cnrs.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

lavue.cnrs.fr

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