Report Summary

  • 77

    Performance

    Renders faster than
    85% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

lexair.fr

Lexair, spécialiste du traitement d'air en salle contrôlée

Page Load Speed

2.5 sec in total

First Response

486 ms

Resources Loaded

1.8 sec

Page Rendered

205 ms

lexair.fr screenshot

About Website

Click here to check amazing Lexair content. Otherwise, check out these important facts you probably never knew about lexair.fr

Lexair réalise depuis sa création des installations de traitement d'air et de ventilation industrielle sur tout le territoire national et dans différents secteurs tels que l'industrie et la santé.

Visit lexair.fr

Key Findings

We analyzed Lexair.fr page load time and found that the first response time was 486 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

lexair.fr performance score

77

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value3.4 s

67/100

25%

SI (Speed Index)

Value2.9 s

95/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.305

39/100

15%

TTI (Time to Interactive)

Value6.4 s

60/100

10%

Network Requests Diagram

lexair.fr

486 ms

style.css

304 ms

reset.css

244 ms

jquery.min.js

27 ms

jquery.innerfade.js

233 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 88% of them (22 requests) were addressed to the original Lexair.fr, 8% (2 requests) were made to Google-analytics.com and 4% (1 request) were made to Ajax.googleapis.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Lexair.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 49.7 kB (5%)

Content Size

947.3 kB

After Optimization

897.5 kB

In fact, the total size of Lexair.fr main page is 947.3 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. Only 10% of websites need less resources to load. Images take 878.8 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 5.7 kB

  • Original 8.0 kB
  • After minification 6.0 kB
  • After compression 2.3 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 2.0 kB, which is 24% 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 5.7 kB or 71% of the original size.

Image Optimization

-1%

Potential reduce by 9.4 kB

  • Original 878.8 kB
  • After minification 869.4 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. Lexair images are well optimized though.

JavaScript Optimization

-41%

Potential reduce by 15.6 kB

  • Original 37.7 kB
  • After minification 32.9 kB
  • After compression 22.1 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 15.6 kB or 41% of the original size.

CSS Optimization

-84%

Potential reduce by 19.1 kB

  • Original 22.8 kB
  • After minification 16.1 kB
  • After compression 3.7 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. Lexair.fr needs all CSS files to be minified and compressed as it can save up to 19.1 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (25%)

Requests Now

24

After Optimization

18

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lexair. 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 as a result speed up the page load time.

Accessibility Review

lexair.fr accessibility score

70

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

lexair.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

lexair.fr SEO score

67

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    FR

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lexair.fr can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Lexair.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 Lexair. 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: