Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 46% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

onoff.fr

Accueil - Onoff app

Page Load Speed

3.3 sec in total

First Response

271 ms

Resources Loaded

2.6 sec

Page Rendered

426 ms

onoff.fr screenshot

About Website

Click here to check amazing Onoff content for France. Otherwise, check out these important facts you probably never knew about onoff.fr

Pour vos besoins pro ou perso, un second numéro sans carte SIM ni téléphone supplémentaire, le tout dans une seule application avec Onoff.

Visit onoff.fr

Key Findings

We analyzed Onoff.fr page load time and found that the first response time was 271 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

onoff.fr performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value10.7 s

0/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value1,410 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value12.3 s

15/100

10%

Network Requests Diagram

onoff.fr

271 ms

www.onoff.fr

843 ms

onoff-web.css

95 ms

picturefill.min.js

127 ms

onoff-web.min.js

278 ms

Our browser made a total of 57 requests to load all elements on the main page. We found that 61% of them (35 requests) were addressed to the original Onoff.fr, 12% (7 requests) were made to Media.voog.com and 7% (4 requests) were made to F.vimeocdn.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Onoff.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (54%)

Content Size

2.2 MB

After Optimization

998.9 kB

In fact, the total size of Onoff.fr main page is 2.2 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. 45% of websites need less resources to load. Javascripts take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 51.0 kB

  • Original 73.7 kB
  • After minification 71.4 kB
  • After compression 22.7 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. 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 51.0 kB or 69% of the original size.

Image Optimization

-6%

Potential reduce by 39.5 kB

  • Original 663.4 kB
  • After minification 623.9 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. Onoff images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 911.4 kB

  • Original 1.2 MB
  • After minification 1.2 MB
  • After compression 328.6 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 911.4 kB or 73% of the original size.

CSS Optimization

-86%

Potential reduce by 150.0 kB

  • Original 173.6 kB
  • After minification 173.3 kB
  • After compression 23.6 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. Onoff.fr needs all CSS files to be minified and compressed as it can save up to 150.0 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (22%)

Requests Now

51

After Optimization

40

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Onoff. 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

onoff.fr accessibility score

78

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

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

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

onoff.fr 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

SEO Factors

onoff.fr SEO score

93

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

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Onoff.fr can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it does not match the claimed English language. Our system also found out that Onoff.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 Onoff. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: