Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

ceremade.dauphine.fr

Centre de Recherche en Mathématiques de la Décision (CEREMADE)

Page Load Speed

3.5 sec in total

First Response

271 ms

Resources Loaded

2.8 sec

Page Rendered

438 ms

ceremade.dauphine.fr screenshot

About Website

Welcome to ceremade.dauphine.fr homepage info - get ready to check CEREMADE Dauphine best content for France right away, or after learning these important things about ceremade.dauphine.fr

CEREMADE – UMR CNRS 7534 – Université Paris-Dauphine. Centre de Recherche en Mathématiques de la Décision.

Visit ceremade.dauphine.fr

Key Findings

We analyzed Ceremade.dauphine.fr page load time and found that the first response time was 271 ms and then it took 3.3 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

ceremade.dauphine.fr performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value6.8 s

7/100

25%

SI (Speed Index)

Value9.1 s

14/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.928

3/100

15%

TTI (Time to Interactive)

Value10.0 s

27/100

10%

Network Requests Diagram

ceremade.dauphine.fr

271 ms

www.ceremade.dauphine.fr

890 ms

7bf3d21018.css

111 ms

jquery.fancybox.css

229 ms

bootstrap.min.css

370 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 97% of them (59 requests) were addressed to the original Ceremade.dauphine.fr, 2% (1 request) were made to Ajax.googleapis.com and 2% (1 request) were made to 0. The less responsive or slowest element that took the longest time to load (890 ms) belongs to the original domain Ceremade.dauphine.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 227.2 kB (22%)

Content Size

1.0 MB

After Optimization

799.7 kB

In fact, the total size of Ceremade.dauphine.fr main page is 1.0 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. 50% of websites need less resources to load. Images take 779.7 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 31.9 kB

  • Original 40.1 kB
  • After minification 37.2 kB
  • After compression 8.2 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. 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 31.9 kB or 80% of the original size.

Image Optimization

-16%

Potential reduce by 121.5 kB

  • Original 779.7 kB
  • After minification 658.2 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. Obviously, CEREMADE Dauphine needs image optimization as it can save up to 121.5 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-42%

Potential reduce by 68.6 kB

  • Original 163.9 kB
  • After minification 163.9 kB
  • After compression 95.3 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 68.6 kB or 42% of the original size.

CSS Optimization

-12%

Potential reduce by 5.2 kB

  • Original 43.2 kB
  • After minification 43.1 kB
  • After compression 37.9 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. Ceremade.dauphine.fr needs all CSS files to be minified and compressed as it can save up to 5.2 kB or 12% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (42%)

Requests Now

57

After Optimization

33

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CEREMADE Dauphine. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

ceremade.dauphine.fr accessibility score

89

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

Image elements do not have [alt] attributes

Best Practices

ceremade.dauphine.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

High

Browser errors were logged to the console

SEO Factors

ceremade.dauphine.fr SEO score

81

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

Image elements do not have [alt] attributes

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 Ceremade.dauphine.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 Ceremade.dauphine.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 CEREMADE Dauphine. 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: