Access ionis-el.com. 博鱼app（中国）APP·官方网站

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

23/100

10%

LCP (Largest Contentful Paint)

Value18.1 s

0/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value19,490 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value34.1 s

0/100

10%

ionis-el.com

198 ms

styles.css

192 ms

nyroModal.css

190 ms

mt.js

201 ms

jquery-1.3.2.min.js

62 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 90% of them (37 requests) were addressed to the original Ionis-el.com, 5% (2 requests) were made to Blogs.ionis-group.com and 2% (1 request) were made to Jqueryjs.googlecode.com. The less responsive or slowest element that took the longest time to load (1.1 sec) relates to the external source Blogs.ionis-group.com.

Content Size

282.1 kB

After Optimization

192.1 kB

In fact, the total size of Ionis-el.com main page is 282.1 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 169.2 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 12.5 kB

Original 16.5 kB
After minification 14.0 kB
After compression 4.0 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 2.6 kB, which is 16% 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 12.5 kB or 76% of the original size.

Image Optimization

-3%

Potential reduce by 5.8 kB

Original 169.2 kB
After minification 163.4 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. Ionis El images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 57.0 kB

Original 77.7 kB
After minification 77.6 kB
After compression 20.7 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 57.0 kB or 73% of the original size.

CSS Optimization

-79%

Potential reduce by 14.7 kB

Original 18.7 kB
After minification 14.3 kB
After compression 4.0 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. Ionis-el.com needs all CSS files to be minified and compressed as it can save up to 14.7 kB or 79% of the original size.

Requests Now

After Optimization

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ionis El. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

High

[role]s are not contained by their required parent element

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Links do not have a discernible name

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

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

High

Links are not crawlable

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Ionis-el.com 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 Ionis-el.com 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

ionis-el.com

Open Graph description is not detected on the main page of Ionis El. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

博鱼app（中国）APP·官方网站

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

ionis-el.com

styles.css

nyroModal.css

mt.js

jquery-1.3.2.min.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

ionis-el.com

styles.css

nyroModal.css

mt.js

jquery-1.3.2.min.js

jquery.nyroModal-1.5.0.min.js

xtclicks.js

xtcore.js

base-weblog.css

general-bg.gif

validation-acquis-experience.jpg

actualites.gif

ombre-gauche.png

ombre-droite.png

header_total.jpg

bloc-recherche.png

ok.png

fond_centre.gif

qui-sommes-nous.jpg

puce_menu_gauche.jpg

formation-durable-iel.jpg

vae.jpg

bg-formation-durable.png

bg-vae.png

separation.gif

actualites-middle.gif

isg.jpg

puce_content.jpg

IMG_3837%20-%20Copie.JPG

SPOsmall.jpg

actualites-bottom.gif

picto-facebook.jpg

picto-twitter.jpg

temoignages.jpg

bg-temoignage.jpg

bottom-temoignage.jpg

footer.jpg

puce_ecoles.jpg

corner-right.gif

corner-left.gif

hit.xiti

Accessibility Review

Accessibility Issues