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2.5 sec
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Welcome to sciences.univ-lyon1.fr homepage info - get ready to check Sciences Univ Lyon 1 best content for France right away, or after learning these important things about sciences.univ-lyon1.fr
La Faculté des Sciences et Technologies est une Unité de Formation et de Recherche (UFR) de l'Université Claude Bernard Lyon 1.
Visit sciences.univ-lyon1.frWe analyzed Sciences.univ-lyon1.fr page load time and found that the first response time was 706 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.
sciences.univ-lyon1.fr performance score
name
value
score
weighting
Value5.2 s
8/100
10%
Value5.4 s
20/100
25%
Value8.4 s
18/100
10%
Value840 ms
34/100
30%
Value0
100/100
15%
Value11.2 s
20/100
10%
706 ms
121 ms
190 ms
314 ms
194 ms
Our browser made a total of 112 requests to load all elements on the main page. We found that 63% of them (70 requests) were addressed to the original Sciences.univ-lyon1.fr, 28% (31 requests) were made to Pbs.twimg.com and 4% (4 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (709 ms) belongs to the original domain Sciences.univ-lyon1.fr.
Page size can be reduced by 618.6 kB (31%)
2.0 MB
1.4 MB
In fact, the total size of Sciences.univ-lyon1.fr main page is 2.0 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 1.3 MB which makes up the majority of the site volume.
Potential reduce by 43.6 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 6.1 kB, which is 11% 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 43.6 kB or 78% of the original size.
Potential reduce by 81.6 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. Sciences Univ Lyon 1 images are well optimized though.
Potential reduce by 436.6 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 436.6 kB or 79% of the original size.
Potential reduce by 56.8 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. Sciences.univ-lyon1.fr needs all CSS files to be minified and compressed as it can save up to 56.8 kB or 81% of the original size.
Number of requests can be reduced by 59 (54%)
110
51
The browser has sent 110 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sciences Univ Lyon 1. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 35 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.
sciences.univ-lyon1.fr
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sciences.univ-lyon1.fr accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
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
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Some elements have a [tabindex] value greater than 0
sciences.univ-lyon1.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
Missing source maps for large first-party JavaScript
sciences.univ-lyon1.fr SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
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
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sciences.univ-lyon1.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 Sciences.univ-lyon1.fr main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
sciences.univ-lyon1.fr
Open Graph description is not detected on the main page of Sciences Univ Lyon 1. 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: