Tools & Wizards About Us

Report Summary

  • 62

    Performance

    Renders faster than
    76% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

chauffagenantes.fr

Chauffage toutes énergies sur Nantes et 44 - Secafi chauffagiste

Page Load Speed

3.8 sec in total

First Response

765 ms

Resources Loaded

2.9 sec

Page Rendered

180 ms

About Website

Welcome to chauffagenantes.fr homepage info - get ready to check Chauffage Nantes best content right away, or after learning these important things about chauffagenantes.fr

Installation, maintenance et dépannage de tout équipement de chauffage, climatisation et sanitaire, l'entreprise Secafi à votre service depuis près de 40 ans à Nantes.

Visit chauffagenantes.fr

Key Findings

We analyzed Chauffagenantes.fr page load time and found that the first response time was 765 ms and then it took 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

chauffagenantes.fr performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.9 s

11/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

29/100

25%

SI (Speed Index)

Value5.6 s

52/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.11

87/100

15%

TTI (Time to Interactive)

Value6.1 s

63/100

10%

Network Requests Diagram

www.chauffagenantes.fr

765 ms

layout.css

153 ms

font.css

328 ms

web.css

496 ms

common,facebook,shoppingbasket

501 ms

Our browser made a total of 36 requests to load all elements on the main page. We found that 67% of them (24 requests) were addressed to the original Chauffagenantes.fr, 22% (8 requests) were made to Cdn.website-start.de and 6% (2 requests) were made to 102.sb.mywebsite-editor.com. The less responsive or slowest element that took the longest time to load (973 ms) relates to the external source Cdn.website-start.de.

Page Optimization Overview & Recommendations

Page size can be reduced by 74.0 kB (27%)

Content Size

273.4 kB

After Optimization

199.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chauffagenantes.fr main page is 273.4 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. 25% of websites need less resources to load. Images take 154.8 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 24.0 kB

  • Original 31.4 kB
  • After minification 29.7 kB
  • After compression 7.4 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 24.0 kB or 76% of the original size.

Image Optimization

-1%

Potential reduce by 1.5 kB

  • Original 154.8 kB
  • After minification 153.4 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. Chauffage Nantes images are well optimized though.

JavaScript Optimization

-57%

Potential reduce by 48.1 kB

  • Original 84.9 kB
  • After minification 84.9 kB
  • After compression 36.8 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 48.1 kB or 57% of the original size.

CSS Optimization

-22%

Potential reduce by 507 B

  • Original 2.3 kB
  • After minification 2.3 kB
  • After compression 1.8 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. Chauffagenantes.fr needs all CSS files to be minified and compressed as it can save up to 507 B or 22% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (69%)

Requests Now

35

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chauffage Nantes. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

chauffagenantes.fr accessibility score

63

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

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

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

chauffagenantes.fr best practices score

75

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

Page has valid source maps

SEO Factors

chauffagenantes.fr SEO score

77

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

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 Chauffagenantes.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 Chauffagenantes.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 Chauffage Nantes. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: