Tools & Wizards About Us
www-ist.cea.fr screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

www-ist.cea.fr

Espace chercheurs - L'Information scientifique au service de la recherche

Page Load Speed

3.8 sec in total

First Response

417 ms

Resources Loaded

3.2 sec

Page Rendered

225 ms

www-ist.cea.fr screenshot

About Website

Click here to check amazing Www Ist Cea content for France. Otherwise, check out these important facts you probably never knew about www-ist.cea.fr

Le dispositif IST au CEA propose un soutien aux chercheurs et à leurs équipes autour de la collecte, de l’accès, de la diffusion et de la valorisation des travaux scientifiques.

Visit www-ist.cea.fr

Key Findings

We analyzed Www-ist.cea.fr page load time and found that the first response time was 417 ms and then it took 3.4 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

www-ist.cea.fr performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.0 s

1/100

10%

LCP (Largest Contentful Paint)

Value12.7 s

0/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value14.6 s

8/100

10%

Network Requests Diagram

www-ist.cea.fr

417 ms

accueil-ist.aspx

809 ms

corev15.css

326 ms

pagelayouts15.css

241 ms

CssFiles.ashx

482 ms

Our browser made a total of 71 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Www-ist.cea.fr, 92% (65 requests) were made to Cea.fr and 3% (2 requests) were made to Cea.matomo.cloud. The less responsive or slowest element that took the longest time to load (931 ms) relates to the external source Cea.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 441.8 kB (32%)

Content Size

1.4 MB

After Optimization

950.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Www-ist.cea.fr main page is 1.4 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. 45% of websites need less resources to load. Javascripts take 711.7 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 69.9 kB

  • Original 90.4 kB
  • After minification 78.8 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. This page needs HTML code to be minified as it can gain 11.6 kB, which is 13% 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 69.9 kB or 77% of the original size.

Image Optimization

-28%

Potential reduce by 131.3 kB

  • Original 474.8 kB
  • After minification 343.5 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, Www Ist Cea needs image optimization as it can save up to 131.3 kB or 28% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-27%

Potential reduce by 188.8 kB

  • Original 711.7 kB
  • After minification 711.7 kB
  • After compression 522.9 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 188.8 kB or 27% of the original size.

CSS Optimization

-45%

Potential reduce by 51.8 kB

  • Original 115.5 kB
  • After minification 115.5 kB
  • After compression 63.7 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. Www-ist.cea.fr needs all CSS files to be minified and compressed as it can save up to 51.8 kB or 45% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (51%)

Requests Now

67

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Www Ist Cea. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www-ist.cea.fr

www-ist.cea.fr

417 ms

accueil-ist.aspx

accueil-ist.aspx

809 ms

corev15.css

corev15.css

326 ms

pagelayouts15.css

pagelayouts15.css

241 ms

CssFiles.ashx

CssFiles.ashx

482 ms

theme_responsive.css

theme_responsive.css

321 ms

initstrings.js

initstrings.js

392 ms

init.js

init.js

717 ms

theming.js

theming.js

440 ms

ScriptResource.axd

ScriptResource.axd

487 ms

blank.js

blank.js

408 ms

ScriptResource.axd

ScriptResource.axd

487 ms

sp.res.js

sp.res.js

492 ms

sp.runtime.js

sp.runtime.js

603 ms

sp.init.js

sp.init.js

564 ms

sp.ui.dialog.js

sp.ui.dialog.js

565 ms

sp.js

sp.js

931 ms

WebResource.axd

WebResource.axd

578 ms

JsFiles.ashx

JsFiles.ashx

835 ms

api.js

api.js

35 ms

theme_global.css

theme_global.css

332 ms

dcom.css

dcom.css

346 ms

header2017-corporate.css

header2017-corporate.css

368 ms

responsive.css

responsive.css

415 ms

extra.css

extra.css

97 ms

matomo.js

matomo.js

212 ms

background.jpg

background.jpg

315 ms

cea.jpg

cea.jpg

198 ms

cea-portal.png

cea-portal.png

197 ms

cea.jpg

cea.jpg

199 ms

home.png

home.png

196 ms

search.gif

search.gif

196 ms

print.png

print.png

208 ms

favori.png

favori.png

208 ms

mail.png

mail.png

207 ms

facebook.png

facebook.png

207 ms

twitter.png

twitter.png

207 ms

linkedin.gif

linkedin.gif

284 ms

espace-chercheurs-visuel-ressources-scientifiques.jpg

espace-chercheurs-visuel-ressources-scientifiques.jpg

288 ms

Droid_moteur_decouverte.PNG

Droid_moteur_decouverte.PNG

291 ms

carte.png

carte.png

281 ms

corev15.css

corev15.css

398 ms

pagelayouts15.css

pagelayouts15.css

359 ms

cea.jpg

cea.jpg

355 ms

back2cea.jpg

back2cea.jpg

358 ms

header.jpg

header.jpg

360 ms

menu-separator.png

menu-separator.png

384 ms

navdropdown.jpg

navdropdown.jpg

430 ms

quicknav-extlink.gif

quicknav-extlink.gif

437 ms

banniere-web-CEA360.png

banniere-web-CEA360.png

441 ms

puce-navsub-1.gif

puce-navsub-1.gif

442 ms

block-trick.gif

block-trick.gif

438 ms

links.gif

links.gif

441 ms

go-white.png

go-white.png

480 ms

puce_keyword.gif

puce_keyword.gif

493 ms

Poppins-Regular.ttf

Poppins-Regular.ttf

665 ms

Ubuntu-R-webfont.woff

Ubuntu-R-webfont.woff

497 ms

twitter.svg

twitter.svg

516 ms

linkedin.svg

linkedin.svg

518 ms

gotop.png

gotop.png

540 ms

logo-cea-marianne-republique-francaise.png

logo-cea-marianne-republique-francaise.png

555 ms

go-white.png

go-white.png

559 ms

SP.Web.GetContextWebThemeData

SP.Web.GetContextWebThemeData

500 ms

strings.js

strings.js

564 ms

overlay.png

overlay.png

519 ms

matomo.php

matomo.php

453 ms

configs.php

configs.php

387 ms

searchbox_cea_eds_2021-10c.html

searchbox_cea_eds_2021-10c.html

134 ms

ebscohostsearch2.js

ebscohostsearch2.js

97 ms

core.js

core.js

261 ms

searchbox_cea_eds_2021-10c.html

searchbox_cea_eds_2021-10c.html

97 ms

Accessibility Review

www-ist.cea.fr accessibility score

80

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

<frame> or <iframe> elements do not have a title

High

Form elements do not have associated labels

High

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

www-ist.cea.fr 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

Missing source maps for large first-party JavaScript

SEO Factors

www-ist.cea.fr SEO score

71

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

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 Www-ist.cea.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 Www-ist.cea.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

www-ist.cea.fr

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