Tools & Wizards About Us
certinergy.com screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

certinergy.com

CertiNergy & Solutions, partenaire de votre performance énergétique

Page Load Speed

2.7 sec in total

First Response

16 ms

Resources Loaded

2.3 sec

Page Rendered

433 ms

certinergy.com screenshot

About Website

Welcome to certinergy.com homepage info - get ready to check Certi Nergy best content for France right away, or after learning these important things about certinergy.com

CertiNergy & Solutions vise à réduire votre empreinte carbone et vos consommations énergétiques à travers des travaux d’économies d’énergie.

Visit certinergy.com

Key Findings

We analyzed Certinergy.com page load time and found that the first response time was 16 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

certinergy.com performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

67/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

28/100

25%

SI (Speed Index)

Value5.1 s

61/100

10%

TBT (Total Blocking Time)

Value2,020 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value1

2/100

15%

TTI (Time to Interactive)

Value15.8 s

6/100

10%

Network Requests Diagram

certinergy.com

16 ms

certinergy.com

23 ms

1351 ms

jquery.fancybox.min.css

14 ms

css

59 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 34% of them (19 requests) were addressed to the original Certinergy.com, 36% (20 requests) were made to I0.wp.com and 9% (5 requests) were made to Fonts.wp.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Certinergy.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 213.6 kB (15%)

Content Size

1.5 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Certinergy.com main page is 1.5 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. 50% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 164.4 kB

  • Original 190.0 kB
  • After minification 184.2 kB
  • After compression 25.6 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 164.4 kB or 87% of the original size.

Image Optimization

-2%

Potential reduce by 21.0 kB

  • Original 1.1 MB
  • After minification 1.1 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. Certi Nergy images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 28.2 kB

  • Original 175.9 kB
  • After minification 175.9 kB
  • After compression 147.7 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 28.2 kB or 16% of the original size.

CSS Optimization

-1%

Potential reduce by 15 B

  • Original 1.4 kB
  • After minification 1.4 kB
  • After compression 1.4 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. Certinergy.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 26 (55%)

Requests Now

47

After Optimization

21

  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Certi Nergy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

certinergy.com

certinergy.com

16 ms

certinergy.com

certinergy.com

23 ms

1351 ms

jquery.fancybox.min.css

jquery.fancybox.min.css

14 ms

css

css

59 ms

jquery.min.js

jquery.min.js

23 ms

jquery-migrate.min.js

jquery-migrate.min.js

22 ms

certinergy.com

certinergy.com

22 ms

bilmur.min.js

bilmur.min.js

38 ms

35 ms

34 ms

139848030.js

139848030.js

474 ms

hello-frontend.min.js

hello-frontend.min.js

34 ms

jquery.fancybox.min.js

jquery.fancybox.min.js

33 ms

e-202421.js

e-202421.js

36 ms

frontend.js

frontend.js

34 ms

v2.js

v2.js

633 ms

48 ms

frontend.min.js

frontend.min.js

34 ms

matomo.js

matomo.js

203 ms

logo-certinergy.png

logo-certinergy.png

135 ms

transition-energetique.png

transition-energetique.png

147 ms

Rectangle-16.png

Rectangle-16.png

112 ms

certinergy-travaux-energetique.png

certinergy-travaux-energetique.png

207 ms

expertise-cee.png

expertise-cee.png

182 ms

solution-bureau-etude.png

solution-bureau-etude.png

179 ms

Vector-10.png

Vector-10.png

182 ms

Vector-9.png

Vector-9.png

182 ms

Group-2.png

Group-2.png

181 ms

Vector-11.png

Vector-11.png

181 ms

professionnel-batiment.png

professionnel-batiment.png

209 ms

entrepot-frigo.png

entrepot-frigo.png

205 ms

Le-crous-de-Nantes-pays-de-la-loire-fait-de-la-renovation-energetique-de-ses-logements-une-priorite.png

Le-crous-de-Nantes-pays-de-la-loire-fait-de-la-renovation-energetique-de-ses-logements-une-priorite.png

488 ms

Des-economies-denergie-reelles-pour-le-site-de-Cemoi-a-Perpignan.png

Des-economies-denergie-reelles-pour-le-site-de-Cemoi-a-Perpignan.png

205 ms

contact-certinergy-et-solutions.png

contact-certinergy-et-solutions.png

355 ms

Lettre-dinformations-CEE-davril-2024.png

Lettre-dinformations-CEE-davril-2024.png

319 ms

template-visuel-articles-1.png

template-visuel-articles-1.png

375 ms

qualite-travaux-energetique.png

qualite-travaux-energetique.png

311 ms

cropped-logo-certinergy-engie-CMJN-1.png

cropped-logo-certinergy-engie-CMJN-1.png

256 ms

linkedin-1-1.png

linkedin-1-1.png

298 ms

twitter-6-1.png

twitter-6-1.png

325 ms

Group-37.png

Group-37.png

335 ms

Group-3.png

Group-3.png

340 ms

S6uyw4BMUTPHjx4wWA.woff

S6uyw4BMUTPHjx4wWA.woff

156 ms

S6u9w4BMUTPHh7USSwiPHw.woff

S6u9w4BMUTPHh7USSwiPHw.woff

171 ms

S6u8w4BMUTPHh30AXC-s.woff

S6u8w4BMUTPHh30AXC-s.woff

172 ms

S6u9w4BMUTPHh6UVSwiPHw.woff

S6u9w4BMUTPHh6UVSwiPHw.woff

173 ms

S6u9w4BMUTPHh50XSwiPHw.woff

S6u9w4BMUTPHh50XSwiPHw.woff

173 ms

fa-solid-900.woff

fa-solid-900.woff

91 ms

fa-regular-400.woff

fa-regular-400.woff

56 ms

web-interactives-embed.js

web-interactives-embed.js

507 ms

banner.js

banner.js

484 ms

139848030.js

139848030.js

528 ms

collectedforms.js

collectedforms.js

517 ms

matomo.php

matomo.php

608 ms

configs.php

configs.php

399 ms

Accessibility Review

certinergy.com accessibility score

98

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

Links do not have a discernible name

Best Practices

certinergy.com best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

certinergy.com SEO score

97

Search Engine Optimization Advices

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

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 Certinergy.com 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 Certinergy.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

certinergy.com

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