Tools & Wizards About Us
insu.cnrs.fr screenshot

Report Summary

  • 30

    Performance

    Renders faster than
    50% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

insu.cnrs.fr

CNRS Terre & Univers

Page Load Speed

4.7 sec in total

First Response

342 ms

Resources Loaded

3.8 sec

Page Rendered

614 ms

insu.cnrs.fr screenshot

About Website

Visit insu.cnrs.fr now to see the best up-to-date Insu CNRS content for France and also check out these interesting facts you probably never knew about insu.cnrs.fr

L'institut national des sciences de l'Univers (INSU) du CNRS a pour mission d'élaborer, développer et coordonner les recherches d'ampleur nationale et internationale en astronomie,...

Visit insu.cnrs.fr

Key Findings

We analyzed Insu.cnrs.fr page load time and found that the first response time was 342 ms and then it took 4.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

insu.cnrs.fr performance score

30

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value15.3 s

0/100

25%

SI (Speed Index)

Value11.6 s

4/100

10%

TBT (Total Blocking Time)

Value1,030 ms

26/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

insu.cnrs.fr

342 ms

www.insu.cnrs.fr

555 ms

fr

92 ms

matomo.js

652 ms

css_qOCXYqEkVkFX3jReuSxRsxt4j3kgid3dySKCOxUltkE.css

84 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 89% of them (42 requests) were addressed to the original Insu.cnrs.fr, 4% (2 requests) were made to Statistiques.cnrs.fr and 4% (2 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Insu.cnrs.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 505.9 kB (8%)

Content Size

6.2 MB

After Optimization

5.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Insu.cnrs.fr main page is 6.2 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. 50% of websites need less resources to load. Images take 6.0 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 57.9 kB

  • Original 70.8 kB
  • After minification 65.1 kB
  • After compression 12.9 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 57.9 kB or 82% of the original size.

Image Optimization

-7%

Potential reduce by 446.8 kB

  • Original 6.0 MB
  • After minification 5.6 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. Insu CNRS images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 271 B

  • Original 73.8 kB
  • After minification 73.8 kB
  • After compression 73.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-2%

Potential reduce by 874 B

  • Original 43.6 kB
  • After minification 43.6 kB
  • After compression 42.7 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. Insu.cnrs.fr has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 12 (28%)

Requests Now

43

After Optimization

31

  • Images
  • JavaScript
  • CSS

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Insu 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 8 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

insu.cnrs.fr

insu.cnrs.fr

342 ms

www.insu.cnrs.fr

www.insu.cnrs.fr

555 ms

fr

fr

92 ms

matomo.js

matomo.js

652 ms

css_qOCXYqEkVkFX3jReuSxRsxt4j3kgid3dySKCOxUltkE.css

css_qOCXYqEkVkFX3jReuSxRsxt4j3kgid3dySKCOxUltkE.css

84 ms

css_cruMQebpWQsUajGY-jr0Pin2deu8GXvgNXvOqnU6_Jg.css

css_cruMQebpWQsUajGY-jr0Pin2deu8GXvgNXvOqnU6_Jg.css

168 ms

css_J2_VPQ5eSCDDaZe3h7kmSsAgSplRgXKeopjesuYRx2s.css

css_J2_VPQ5eSCDDaZe3h7kmSsAgSplRgXKeopjesuYRx2s.css

250 ms

css_3k0F8tFqZQo_0r-b-ESKes69QYRmLTH7HeZMiPKcR8U.css

css_3k0F8tFqZQo_0r-b-ESKes69QYRmLTH7HeZMiPKcR8U.css

250 ms

css_1f0dJSZBV4YXZqTVaC7-dbVkeCRWx__AsCfL0c64z0s.css

css_1f0dJSZBV4YXZqTVaC7-dbVkeCRWx__AsCfL0c64z0s.css

333 ms

CNRS_TERRE_DIGI_V_RVB.svg

CNRS_TERRE_DIGI_V_RVB.svg

252 ms

CNRS_TERRE_DIGI_H_RVB.svg

CNRS_TERRE_DIGI_H_RVB.svg

255 ms

js_xnts0UZtEaBUPwd_QCEWYNuLfFRb3GLGr6dig294B0E.js

js_xnts0UZtEaBUPwd_QCEWYNuLfFRb3GLGr6dig294B0E.js

437 ms

js_jl0zwMuU7bhKXPW4LuawyCbfWEExqJJ9RX2bYRXx6Zo.js

js_jl0zwMuU7bhKXPW4LuawyCbfWEExqJJ9RX2bYRXx6Zo.js

328 ms

js_znHae24bRii2OXx_Sm8RPjPDUuZt5u6aNqpAHCmcq00.js

js_znHae24bRii2OXx_Sm8RPjPDUuZt5u6aNqpAHCmcq00.js

437 ms

MathJax.js

MathJax.js

43 ms

js_549J0JP-H_Z34yZRjoeFFBS0ThyKKQWae8O1G-zQsDs.js

js_549J0JP-H_Z34yZRjoeFFBS0ThyKKQWae8O1G-zQsDs.js

448 ms

vignette%20scientifiques_1.png

vignette%20scientifiques_1.png

502 ms

feuillet%20visuel.png

feuillet%20visuel.png

657 ms

Les%20recherches%20spatiales%20au%20CNRS_Page_3.png

Les%20recherches%20spatiales%20au%20CNRS_Page_3.png

778 ms

5_1.png

5_1.png

626 ms

1_33.png

1_33.png

666 ms

3_1.png

3_1.png

529 ms

2_21.png

2_21.png

668 ms

4_0.png

4_0.png

776 ms

7_3.png

7_3.png

796 ms

9_0.png

9_0.png

739 ms

6_0.png

6_0.png

883 ms

logo-footer.svg

logo-footer.svg

750 ms

ERC_Logo_red.png

ERC_Logo_red.png

822 ms

zoom-white.svg

zoom-white.svg

488 ms

world.svg

world.svg

513 ms

MosaiqueINSUHome.jpg

MosaiqueINSUHome.jpg

1418 ms

JupiterDolphin.jpg

JupiterDolphin.jpg

1109 ms

tanya-grypachevskaya-80x3QULJDN4-unsplash.jpg

tanya-grypachevskaya-80x3QULJDN4-unsplash.jpg

1134 ms

wood-trail-france-soil-colors-geology-647603-pxhere.com.jpg

wood-trail-france-soil-colors-geology-647603-pxhere.com.jpg

1309 ms

cnrs_20120001_0239_MD.jpg

cnrs_20120001_0239_MD.jpg

1255 ms

alessandro-zanini-T1FrGaYTNXs-unsplash.jpg

alessandro-zanini-T1FrGaYTNXs-unsplash.jpg

1195 ms

82%20-%20Meteor%20Crater%20Arizona.jpg

82%20-%20Meteor%20Crater%20Arizona.jpg

1850 ms

Bylot10juil16%20%2897%29.JPG

Bylot10juil16%20%2897%29.JPG

2051 ms

linus-nylund-Q5QspluNZmM-unsplash_1.jpg

linus-nylund-Q5QspluNZmM-unsplash_1.jpg

1525 ms

LC08_L1TP_174029-031_20201230_20201230_01_RT.EasternBlackSea.crop.small.jpg

LC08_L1TP_174029-031_20201230_20201230_01_RT.EasternBlackSea.crop.small.jpg

2076 ms

x.svg

x.svg

1392 ms

TeX-AMS-MML_HTMLorMML.js

TeX-AMS-MML_HTMLorMML.js

14 ms

fontello.woff

fontello.woff

1369 ms

accessibility-menu.js

accessibility-menu.js

46 ms

matomo.php

matomo.php

137 ms

css_1voRhevzWk8byp1swws_m9-1380hfDCd7wprdWyXXdc.css

css_1voRhevzWk8byp1swws_m9-1380hfDCd7wprdWyXXdc.css

84 ms

Accessibility Review

insu.cnrs.fr accessibility score

97

Accessibility Issues

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

insu.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

High

Browser errors were logged to the console

SEO Factors

insu.cnrs.fr SEO score

90

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

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 Insu.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 Insu.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

insu.cnrs.fr

Open Graph description is not detected on the main page of Insu CNRS. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: