Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

cadres-sernesi.fr

Cadres Sernesi - SAS SERNESI

Page Load Speed

12.2 sec in total

First Response

249 ms

Resources Loaded

10.8 sec

Page Rendered

1.2 sec

cadres-sernesi.fr screenshot

About Website

Visit cadres-sernesi.fr now to see the best up-to-date Cadres Sernesi content for France and also check out these interesting facts you probably never knew about cadres-sernesi.fr

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Key Findings

We analyzed Cadres-sernesi.fr page load time and found that the first response time was 249 ms and then it took 11.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

cadres-sernesi.fr performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

47/100

10%

LCP (Largest Contentful Paint)

Value5.1 s

24/100

25%

SI (Speed Index)

Value38.6 s

0/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.517

15/100

15%

TTI (Time to Interactive)

Value41.7 s

0/100

10%

Network Requests Diagram

cadres-sernesi.fr

249 ms

www.cadres-sernesi.fr

5143 ms

bootstrap.min.css

436 ms

styles.css

467 ms

style.css

564 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 90% of them (61 requests) were addressed to the original Cadres-sernesi.fr, 6% (4 requests) were made to Fonts.gstatic.com and 1% (1 request) were made to Sernesiv2.pyreweb.fr. The less responsive or slowest element that took the longest time to load (5.1 sec) belongs to the original domain Cadres-sernesi.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 13.0 MB (47%)

Content Size

27.6 MB

After Optimization

14.6 MB

In fact, the total size of Cadres-sernesi.fr main page is 27.6 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. 55% of websites need less resources to load. Images take 27.5 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 35.5 kB

  • Original 43.6 kB
  • After minification 40.1 kB
  • After compression 8.1 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 35.5 kB or 81% of the original size.

Image Optimization

-47%

Potential reduce by 12.9 MB

  • Original 27.5 MB
  • After minification 14.6 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. Obviously, Cadres Sernesi needs image optimization as it can save up to 12.9 MB or 47% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Breakdown

Number of requests can be reduced by 28 (49%)

Requests Now

57

After Optimization

29

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cadres Sernesi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

cadres-sernesi.fr accessibility score

71

Accessibility Issues

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

cadres-sernesi.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

cadres-sernesi.fr SEO score

85

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

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 Cadres-sernesi.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 Cadres-sernesi.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 data is detected on the main page of Cadres Sernesi. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: