Access www-ist.cea.fr. Espace chercheurs - L'Information scientifique au service de la recherche

Report Summary

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

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value8.8 s

15/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.202

61/100

15%

TTI (Time to Interactive)

Value13.4 s

11/100

10%

www-ist.cea.fr

499 ms

information-scientifique

511 ms

accueil-ist.aspx

936 ms

corev15.css

429 ms

pagelayouts15.css

173 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Www-ist.cea.fr, 90% (54 requests) were made to Portail.cea.fr and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (936 ms) relates to the external source Portail.cea.fr.

Content Size

2.1 MB

After Optimization

550.7 kB

In fact, the total size of Www-ist.cea.fr main page is 2.1 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. 35% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 63.4 kB

Original 82.4 kB
After minification 71.1 kB
After compression 19.0 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 11.3 kB, which is 14% 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 63.4 kB or 77% of the original size.

Image Optimization

-38%

Potential reduce by 151.2 kB

Original 398.2 kB
After minification 247.0 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 151.2 kB or 38% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-81%

Potential reduce by 1.0 MB

Original 1.3 MB
After minification 1.2 MB
After compression 234.9 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 1.0 MB or 81% of the original size.

CSS Optimization

-87%

Potential reduce by 338.8 kB

Original 388.7 kB
After minification 277.4 kB
After compression 49.8 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. Www-ist.cea.fr needs all CSS files to be minified and compressed as it can save up to 338.8 kB or 87% of the original size.

Requests Now

After Optimization

The browser has sent 55 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 15 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

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

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

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:

Report Summary

Performance

Accessibility

Best Practices

SEO

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

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)