Tools & Wizards About Us
certis.enpc.fr screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    72% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 57% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

certis.enpc.fr

Imagine – Research Group in Computer Vision, Machine Learning and Optimization

Page Load Speed

1.7 sec in total

First Response

473 ms

Resources Loaded

1 sec

Page Rendered

151 ms

certis.enpc.fr screenshot

About Website

Welcome to certis.enpc.fr homepage info - get ready to check Certis Enpc best content for France right away, or after learning these important things about certis.enpc.fr

Visit certis.enpc.fr

Key Findings

We analyzed Certis.enpc.fr page load time and found that the first response time was 473 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

certis.enpc.fr performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value10.9 s

0/100

25%

SI (Speed Index)

Value7.1 s

32/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value9.0 s

34/100

10%

Network Requests Diagram

certis.enpc.fr

473 ms

style.css

184 ms

top-imagine.png

463 ms

images-small.jpg

378 ms

mesh01-small.png

557 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that all of those requests were addressed to Certis.enpc.fr and no external sources were called. The less responsive or slowest element that took the longest time to load (557 ms) belongs to the original domain Certis.enpc.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 34.4 kB (18%)

Content Size

192.8 kB

After Optimization

158.3 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Certis.enpc.fr main page is 192.8 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 176.5 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 10.1 kB

  • Original 13.2 kB
  • After minification 9.2 kB
  • After compression 3.1 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 4.0 kB, which is 30% 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 10.1 kB or 77% of the original size.

Image Optimization

-12%

Potential reduce by 21.7 kB

  • Original 176.5 kB
  • After minification 154.8 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. Obviously, Certis Enpc needs image optimization as it can save up to 21.7 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-84%

Potential reduce by 2.6 kB

  • Original 3.1 kB
  • After minification 2.3 kB
  • After compression 499 B

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. Certis.enpc.fr needs all CSS files to be minified and compressed as it can save up to 2.6 kB or 84% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Certis Enpc. According to our analytics all requests are already optimized.

Network Requests Diagram

certis.enpc.fr

certis.enpc.fr

473 ms

style.css

style.css

184 ms

top-imagine.png

top-imagine.png

463 ms

images-small.jpg

images-small.jpg

378 ms

mesh01-small.png

mesh01-small.png

557 ms

aiguillesmall.jpg

aiguillesmall.jpg

465 ms

calvairesmall.jpg

calvairesmall.jpg

465 ms

degrade.gif

degrade.gif

96 ms

accueilgauche.gif

accueilgauche.gif

191 ms

Accessibility Review

certis.enpc.fr accessibility score

84

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.

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

certis.enpc.fr best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

certis.enpc.fr SEO score

86

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

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

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Certis.enpc.fr can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Certis.enpc.fr main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

certis.enpc.fr

Open Graph description is not detected on the main page of Certis Enpc. 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: