Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

cief.univ-lyon2.fr

Centre international d’études françaises

Page Load Speed

3.9 sec in total

First Response

814 ms

Resources Loaded

2.8 sec

Page Rendered

291 ms

cief.univ-lyon2.fr screenshot

About Website

Welcome to cief.univ-lyon2.fr homepage info - get ready to check Cief Univ Lyon 2 best content for France right away, or after learning these important things about cief.univ-lyon2.fr

Visit cief.univ-lyon2.fr

Key Findings

We analyzed Cief.univ-lyon2.fr page load time and found that the first response time was 814 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

cief.univ-lyon2.fr performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value29.4 s

0/100

25%

SI (Speed Index)

Value7.4 s

27/100

10%

TBT (Total Blocking Time)

Value240 ms

86/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.8 s

35/100

10%

Network Requests Diagram

cief.univ-lyon2.fr

814 ms

reset.css

194 ms

ecran.css

292 ms

mediatheque.css

195 ms

panier.css

196 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that all of those requests were addressed to Cief.univ-lyon2.fr and no external sources were called. The less responsive or slowest element that took the longest time to load (814 ms) belongs to the original domain Cief.univ-lyon2.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 266.5 kB (50%)

Content Size

534.1 kB

After Optimization

267.6 kB

In fact, the total size of Cief.univ-lyon2.fr main page is 534.1 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 25% of websites need less resources to load. Images take 299.2 kB which makes up the majority of the site volume.

HTML Optimization

-57%

Potential reduce by 23.5 kB

  • Original 41.3 kB
  • After minification 39.3 kB
  • After compression 17.8 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 23.5 kB or 57% of the original size.

Image Optimization

-34%

Potential reduce by 101.5 kB

  • Original 299.2 kB
  • After minification 197.6 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. Obviously, Cief Univ Lyon 2 needs image optimization as it can save up to 101.5 kB or 34% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-71%

Potential reduce by 103.2 kB

  • Original 145.9 kB
  • After minification 128.0 kB
  • After compression 42.7 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 103.2 kB or 71% of the original size.

CSS Optimization

-80%

Potential reduce by 38.4 kB

  • Original 47.8 kB
  • After minification 37.0 kB
  • After compression 9.4 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. Cief.univ-lyon2.fr needs all CSS files to be minified and compressed as it can save up to 38.4 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (67%)

Requests Now

33

After Optimization

11

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cief Univ Lyon 2. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

cief.univ-lyon2.fr accessibility score

88

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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

Buttons do not have an accessible name

High

Links do not have a discernible name

Best Practices

cief.univ-lyon2.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

cief.univ-lyon2.fr SEO score

79

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Document doesn't have a valid hreflang

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

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    FR

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cief.univ-lyon2.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 Cief.univ-lyon2.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.

Social Sharing Optimization

Open Graph description is not detected on the main page of Cief Univ Lyon 2. 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: