Tools & Wizards About Us

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

science-ouverte.u-strasbg.fr

Science ouverte - Université de Strasbourg - Accueil

Page Load Speed

7.6 sec in total

First Response

1.4 sec

Resources Loaded

6 sec

Page Rendered

211 ms

About Website

Welcome to science-ouverte.u-strasbg.fr homepage info - get ready to check Science Ouverte U Strasbg best content for France right away, or after learning these important things about science-ouverte.u-strasbg.fr

Visit science-ouverte.u-strasbg.fr

Key Findings

We analyzed Science-ouverte.u-strasbg.fr page load time and found that the first response time was 1.4 sec and then it took 6.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

science-ouverte.u-strasbg.fr performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

43/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

18/100

25%

SI (Speed Index)

Value6.6 s

37/100

10%

TBT (Total Blocking Time)

Value1,140 ms

22/100

30%

CLS (Cumulative Layout Shift)

Value0.072

96/100

15%

TTI (Time to Interactive)

Value8.4 s

39/100

10%

Network Requests Diagram

scienceouverte.unistra.fr

1424 ms

merged-3d2650e12da7d08c0c605cb691b68f3c-37e9207ec93cdc510cdc00e84a7c25c0.css

406 ms

jquery.min.js

19 ms

merged-b023622455c2018df85635ed2a4fa83e-cff6e8ab03fbc7a4af75a8501717c998.js

297 ms

merged-946878eb7125e1aa613f37613a7ed5c5-b9eda5c166ddf0cd5e80fe4b00e0971c.js

566 ms

Our browser made a total of 40 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Science-ouverte.u-strasbg.fr, 18% (7 requests) were made to S3.unistra.fr and 5% (2 requests) were made to Webomat.unistra.fr. The less responsive or slowest element that took the longest time to load (3.2 sec) relates to the external source Scienceouverte.unistra.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 178.0 kB (7%)

Content Size

2.6 MB

After Optimization

2.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Science-ouverte.u-strasbg.fr main page is 2.6 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. 40% of websites need less resources to load. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 108.4 kB

  • Original 119.8 kB
  • After minification 102.0 kB
  • After compression 11.5 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 17.8 kB, which is 15% 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 108.4 kB or 90% of the original size.

Image Optimization

-1%

Potential reduce by 19.5 kB

  • Original 2.1 MB
  • After minification 2.0 MB

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. Science Ouverte U Strasbg images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 49.9 kB

  • Original 350.1 kB
  • After minification 350.1 kB
  • After compression 300.1 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 49.9 kB or 14% of the original size.

CSS Optimization

-0%

Potential reduce by 186 B

  • Original 61.4 kB
  • After minification 61.4 kB
  • After compression 61.2 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. Science-ouverte.u-strasbg.fr has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 4 (13%)

Requests Now

32

After Optimization

28

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Science Ouverte U Strasbg. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

science-ouverte.u-strasbg.fr accessibility score

90

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

[role]s are not contained by their required parent element

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

Links do not have a discernible name

Best Practices

science-ouverte.u-strasbg.fr best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

science-ouverte.u-strasbg.fr SEO score

91

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Science-ouverte.u-strasbg.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 Science-ouverte.u-strasbg.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

Open Graph description is not detected on the main page of Science Ouverte U Strasbg. 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: