21.1 sec in total
314 ms
10.3 sec
10.5 sec
Visit irfu.cea.fr now to see the best up-to-date Irfu Cea content for France and also check out these interesting facts you probably never knew about irfu.cea.fr
L'IRFU est un institut du CEA/Saclay. Ses recherches portent sur les lois fondamentales de l'Univers. Astrophysique, physique nucléaire et physique des particules, l'infiniment grand et l'infiniment p...
Visit irfu.cea.frWe analyzed Irfu.cea.fr page load time and found that the first response time was 314 ms and then it took 20.8 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
irfu.cea.fr performance score
name
value
score
weighting
Value4.0 s
22/100
10%
Value11.0 s
0/100
25%
Value21.2 s
0/100
10%
Value21,990 ms
0/100
30%
Value0.16
73/100
15%
Value52.4 s
0/100
10%
314 ms
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Our browser made a total of 94 requests to load all elements on the main page. We found that 82% of them (77 requests) were addressed to the original Irfu.cea.fr, 12% (11 requests) were made to Platform.twitter.com and 3% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (4.9 sec) belongs to the original domain Irfu.cea.fr.
Page size can be reduced by 862.4 kB (13%)
6.5 MB
5.7 MB
In fact, the total size of Irfu.cea.fr main page is 6.5 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. 70% of websites need less resources to load. Images take 6.2 MB which makes up the majority of the site volume.
Potential reduce by 71.2 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. This page needs HTML code to be minified as it can gain 18.3 kB, which is 21% 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 71.2 kB or 82% of the original size.
Potential reduce by 761.3 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, Irfu Cea needs image optimization as it can save up to 761.3 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 24.6 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 24.6 kB or 15% of the original size.
Potential reduce by 5.3 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. Irfu.cea.fr has all CSS files already compressed.
Number of requests can be reduced by 27 (29%)
92
65
The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Irfu 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 20 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
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irfu.cea.fr accessibility score
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
Buttons do not have an accessible name
Form elements do not have associated labels
Links do not have a discernible name
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
irfu.cea.fr best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
Issues were logged in the Issues panel in Chrome Devtools
irfu.cea.fr SEO score
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
Document uses legible font sizes
Tap targets are not sized appropriately
FR
FR
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Irfu.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 Irfu.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.
irfu.cea.fr
Open Graph data is detected on the main page of Irfu Cea. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: