Report Summary

  • 65

    Performance

    Renders faster than
    78% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

csa.eu

CSA - Institut d'études marketing et d'opinion

Page Load Speed

2.4 sec in total

First Response

204 ms

Resources Loaded

2 sec

Page Rendered

252 ms

csa.eu screenshot

About Website

Click here to check amazing CSA content for France. Otherwise, check out these important facts you probably never knew about csa.eu

Consumer Science & Analytics, c'est CSA Research, institut de référence des études marketing et d'opinion depuis 40 ans en France et à l'international

Visit csa.eu

Key Findings

We analyzed Csa.eu page load time and found that the first response time was 204 ms and then it took 2.2 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

csa.eu performance score

65

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value5.2 s

23/100

25%

SI (Speed Index)

Value5.0 s

63/100

10%

TBT (Total Blocking Time)

Value190 ms

91/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

csa.eu

204 ms

csa.eu

381 ms

08413a50-95d7-490a-ac15-b2fc53c84c6d.css

42 ms

style.min.css

81 ms

df-newsletter-public.css

159 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 87% of them (33 requests) were addressed to the original Csa.eu, 8% (3 requests) were made to Fast.fonts.net and 3% (1 request) were made to Cdn.matomo.cloud. The less responsive or slowest element that took the longest time to load (574 ms) relates to the external source Csa.matomo.cloud.

Page Optimization Overview & Recommendations

Page size can be reduced by 75.8 kB (21%)

Content Size

354.3 kB

After Optimization

278.4 kB

In fact, the total size of Csa.eu main page is 354.3 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. 35% of websites need less resources to load. Images take 154.6 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 39.4 kB

  • Original 48.1 kB
  • After minification 42.8 kB
  • After compression 8.7 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 5.3 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 39.4 kB or 82% of the original size.

Image Optimization

-5%

Potential reduce by 7.2 kB

  • Original 154.6 kB
  • After minification 147.3 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. CSA images are well optimized though.

JavaScript Optimization

-18%

Potential reduce by 21.4 kB

  • Original 119.3 kB
  • After minification 118.8 kB
  • After compression 97.9 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 21.4 kB or 18% of the original size.

CSS Optimization

-24%

Potential reduce by 7.8 kB

  • Original 32.3 kB
  • After minification 32.3 kB
  • After compression 24.5 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. Csa.eu needs all CSS files to be minified and compressed as it can save up to 7.8 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (76%)

Requests Now

33

After Optimization

8

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CSA. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

csa.eu accessibility score

88

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

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

High

Heading elements are not in a sequentially-descending order

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

csa.eu best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

csa.eu SEO score

100

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

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 Csa.eu 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 Csa.eu 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 data is detected on the main page of CSA. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: