Tools & Wizards About Us
www-irma.u-strasbg.fr screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    74% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 57% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

www-irma.u-strasbg.fr

Institut de Recherche Mathématique Avancée, UMR 7501

Page Load Speed

3.1 sec in total

First Response

717 ms

Resources Loaded

2.2 sec

Page Rendered

119 ms

www-irma.u-strasbg.fr screenshot

About Website

Welcome to www-irma.u-strasbg.fr homepage info - get ready to check Www Irma U Strasbg best content for France right away, or after learning these important things about www-irma.u-strasbg.fr

L'IRMA est une unité mixte de l'Université de Strasbourg et du CNRS, qui mène des recherches en mathématiques pures et appliquées

Visit www-irma.u-strasbg.fr

Key Findings

We analyzed Www-irma.u-strasbg.fr page load time and found that the first response time was 717 ms and then it took 2.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

www-irma.u-strasbg.fr performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

36/100

25%

SI (Speed Index)

Value6.0 s

46/100

10%

TBT (Total Blocking Time)

Value480 ms

60/100

30%

CLS (Cumulative Layout Shift)

Value0.014

100/100

15%

TTI (Time to Interactive)

Value4.5 s

82/100

10%

Network Requests Diagram

www-irma.u-strasbg.fr

717 ms

5804c002e4d914310c2ed883e427a61e.css

282 ms

1727e719b618801cec4d07bb049ce3c0.js

750 ms

bandeau-haut-droit.gif

190 ms

trait-vertical.gif

192 ms

Our browser made a total of 24 requests to load all elements on the main page. We found that all of those requests were addressed to Www-irma.u-strasbg.fr and no external sources were called. The less responsive or slowest element that took the longest time to load (824 ms) belongs to the original domain Www-irma.u-strasbg.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 177.2 kB (71%)

Content Size

249.5 kB

After Optimization

72.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Www-irma.u-strasbg.fr main page is 249.5 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. Only 10% of websites need less resources to load. Javascripts take 206.9 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 15.0 kB

  • Original 21.1 kB
  • After minification 21.0 kB
  • After compression 6.0 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. 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 15.0 kB or 71% of the original size.

Image Optimization

-1%

Potential reduce by 52 B

  • Original 7.3 kB
  • After minification 7.2 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. Www Irma U Strasbg images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 151.1 kB

  • Original 206.9 kB
  • After minification 197.7 kB
  • After compression 55.8 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 151.1 kB or 73% of the original size.

CSS Optimization

-77%

Potential reduce by 11.0 kB

  • Original 14.3 kB
  • After minification 13.8 kB
  • After compression 3.2 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. Www-irma.u-strasbg.fr needs all CSS files to be minified and compressed as it can save up to 11.0 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (65%)

Requests Now

23

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Www Irma 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 and as a result speed up the page load time.

Network Requests Diagram

www-irma.u-strasbg.fr

www-irma.u-strasbg.fr

717 ms

5804c002e4d914310c2ed883e427a61e.css

5804c002e4d914310c2ed883e427a61e.css

282 ms

1727e719b618801cec4d07bb049ce3c0.js

1727e719b618801cec4d07bb049ce3c0.js

750 ms

bandeau-haut-droit.gif

bandeau-haut-droit.gif

190 ms

trait-vertical.gif

trait-vertical.gif

192 ms

logoIRMA.gif

logoIRMA.gif

191 ms

logoCNRS.jpg

logoCNRS.jpg

192 ms

logoUDS.gif

logoUDS.gif

204 ms

lien.gif

lien.gif

221 ms

cadenas.gif

cadenas.gif

377 ms

ok.gif

ok.gif

378 ms

bandeau_une.gif

bandeau_une.gif

566 ms

voir.gif

voir.gif

413 ms

voir.gif

voir.gif

416 ms

lire-la-suite-filet

lire-la-suite-filet

443 ms

accueil.gif

accueil.gif

597 ms

imprimer.gif

imprimer.gif

599 ms

contact.gif

contact.gif

603 ms

plan.gif

plan.gif

615 ms

credits.gif

credits.gif

629 ms

rss.gif

rss.gif

752 ms

overlay.png

overlay.png

810 ms

border.png

border.png

817 ms

controls.png

controls.png

824 ms

Accessibility Review

www-irma.u-strasbg.fr accessibility score

84

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

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

Form elements do not have associated labels

Best Practices

www-irma.u-strasbg.fr best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

www-irma.u-strasbg.fr SEO score

77

Search Engine Optimization Advices

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 Www-irma.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 Www-irma.u-strasbg.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

www-irma.u-strasbg.fr

Open Graph description is not detected on the main page of Www Irma 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: