Access cpe.fr. CPE Lyon | Ecole d'ingénieur en Chimie et Sciences du Numérique - école ingénieur Lyon

name

value

score

weighting

FCP (First Contentful Paint)

Value16.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value23.1 s

0/100

25%

SI (Speed Index)

Value34.5 s

0/100

10%

TBT (Total Blocking Time)

Value240 ms

86/100

30%

CLS (Cumulative Layout Shift)

Value0.084

93/100

15%

TTI (Time to Interactive)

Value22.9 s

1/100

10%

cpe.fr

307 ms

www.cpe.fr

669 ms

css

24 ms

colorbox.css

385 ms

barre_outils.css

297 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 83% of them (67 requests) were addressed to the original Cpe.fr, 5% (4 requests) were made to S7.addthis.com and 5% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Cpe.fr.

Content Size

3.6 MB

After Optimization

2.2 MB

In fact, the total size of Cpe.fr main page is 3.6 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. 45% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 153.0 kB

Original 191.8 kB
After minification 169.1 kB
After compression 38.8 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 22.7 kB, which is 12% 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 153.0 kB or 80% of the original size.

Image Optimization

-3%

Potential reduce by 63.9 kB

Original 1.8 MB
After minification 1.8 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. CPE images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 1.0 MB

Original 1.5 MB
After minification 1.3 MB
After compression 418.7 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 1.0 MB or 71% of the original size.

CSS Optimization

-87%

Potential reduce by 69.0 kB

Original 79.5 kB
After minification 55.0 kB
After compression 10.5 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. Cpe.fr needs all CSS files to be minified and compressed as it can save up to 69.0 kB or 87% of the original size.

Requests Now

After Optimization

The browser has sent 74 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CPE. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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

Image elements do not have [alt] attributes

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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

FR
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cpe.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 Cpe.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

cpe.fr

Open Graph data is detected on the main page of CPE. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook:

Report Summary

Performance

Accessibility

Best Practices

SEO

CPE Lyon | Ecole d'ingénieur en Chimie et Sciences du Numérique - école ingénieur Lyon - prépa ingénieur - école d'ingénieur chimie - école ...

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

cpe.fr

www.cpe.fr

css

colorbox.css

barre_outils.css

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

cpe.fr

www.cpe.fr

css

colorbox.css

barre_outils.css

spip.php

jquery.js

jquery.form.js

jquery.autosave.js

jquery.placeholder-label.js

ajaxCallback.js

jquery.cookie.js

jquery.colorbox.js

spip.mediabox.js

jquery.markitup_pour_spip.js

jquery.previsu_spip.js

spip.php

ckeditor.js

jquery.js

jsdyn-ckeditor4spip_js-a21f747a.js

styles.css

footer.css

modernizr.min.js

jquery.easing.min.js

jquery.bxslider.min.js

imagesloaded.pkgd.min.js

addthis_widget.js

plugins.min.js

scripts.min.js

ga.js

sprite.png

bg-media-header.png

visu-header-2.jpg

logo.png

bg-pattern.png

5536dea72d5ea48c3c12c6d3d81d0630.png

6c5c7a9d3dd1d6780bfa55366f94e04f.jpg

57dfc78e26e9716e1aaf21c1b67b4436.jpg

3ec542cefb03c560dcd012c6fa78b78c.jpg

rubon342.jpg

visu-galaxy-1.jpg

logo-galaxy-1-off.png

logo-galaxy-1-on.png