Tools & Wizards About Us
earthhour.fr screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

earthhour.fr

Earth Hour 2025 | WWF France

Page Load Speed

4.1 sec in total

First Response

549 ms

Resources Loaded

2.8 sec

Page Rendered

782 ms

earthhour.fr screenshot

About Website

Welcome to earthhour.fr homepage info - get ready to check Earth Hour best content for France right away, or after learning these important things about earthhour.fr

Visit earthhour.fr

Key Findings

We analyzed Earthhour.fr page load time and found that the first response time was 549 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

earthhour.fr performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.4 s

2/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value4,560 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value25.9 s

0/100

10%

Network Requests Diagram

earth-hour

549 ms

stub

134 ms

cmp

644 ms

css_ebGP-SD5VNnbafGOov4UgbpT7TjTSPTNkXP2Un33Mxs.css

82 ms

css_w8AjIlWDtSkTxotHQsbbg4oVMU8ZXQS4kNy9jmLSWQM.css

334 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Earthhour.fr, 9% (5 requests) were made to Youtube.com and 3% (2 requests) were made to Api.consentframework.com. The less responsive or slowest element that took the longest time to load (925 ms) relates to the external source Mail.agir.wwf.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 90.6 kB (7%)

Content Size

1.4 MB

After Optimization

1.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Earthhour.fr main page is 1.4 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. 70% of websites need less resources to load. Images take 809.1 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 49.6 kB

  • Original 62.2 kB
  • After minification 57.1 kB
  • After compression 12.6 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 49.6 kB or 80% of the original size.

Image Optimization

-2%

Potential reduce by 12.3 kB

  • Original 809.1 kB
  • After minification 796.8 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. Earth Hour images are well optimized though.

JavaScript Optimization

-8%

Potential reduce by 28.7 kB

  • Original 352.8 kB
  • After minification 352.8 kB
  • After compression 324.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 53 B

  • Original 161.7 kB
  • After minification 161.7 kB
  • After compression 161.6 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. Earthhour.fr has all CSS files already compressed.

Requests Breakdown

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

Requests Now

47

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Earth Hour. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

earth-hour

earth-hour

549 ms

stub

stub

134 ms

cmp

cmp

644 ms

css_ebGP-SD5VNnbafGOov4UgbpT7TjTSPTNkXP2Un33Mxs.css

css_ebGP-SD5VNnbafGOov4UgbpT7TjTSPTNkXP2Un33Mxs.css

82 ms

css_w8AjIlWDtSkTxotHQsbbg4oVMU8ZXQS4kNy9jmLSWQM.css

css_w8AjIlWDtSkTxotHQsbbg4oVMU8ZXQS4kNy9jmLSWQM.css

334 ms

pas-nc-embedded-v1.js

pas-nc-embedded-v1.js

635 ms

js_i8m8o2cT7KGMniB44s57sqlT6J9iNQGMBinNHnCc_bw.js

js_i8m8o2cT7KGMniB44s57sqlT6J9iNQGMBinNHnCc_bw.js

634 ms

faq.main.js

faq.main.js

172 ms

js_g2DD4erLSqQbIgfeiBfvjOiAsfeeoQFwgXib5wEBGgc.js

js_g2DD4erLSqQbIgfeiBfvjOiAsfeeoQFwgXib5wEBGgc.js

241 ms

gtm.js

gtm.js

77 ms

dIGohh8j4cg

dIGohh8j4cg

123 ms

form

form

925 ms

LP-WWF_2000-1328-min.jpg

LP-WWF_2000-1328-min.jpg

658 ms

WWF-EARTHhour-2024.jpg

WWF-EARTHhour-2024.jpg

801 ms

www-player.css

www-player.css

7 ms

www-embed-player.js

www-embed-player.js

36 ms

base.js

base.js

181 ms

WWF_logo-50-ans-bg-white.svg

WWF_logo-50-ans-bg-white.svg

416 ms

tiled_geo_light.png

tiled_geo_light.png

504 ms

icon-don.svg

icon-don.svg

418 ms

icon-boutique.svg

icon-boutique.svg

505 ms

icon-mon-espace.svg

icon-mon-espace.svg

506 ms

header-search-icon.svg

header-search-icon.svg

504 ms

header-top-menu-icon.svg

header-top-menu-icon.svg

535 ms

tiled_geo_dark.png

tiled_geo_dark.png

564 ms

content-header-back-icon.svg

content-header-back-icon.svg

561 ms

LP-WWF_2000-1328-min.jpg

LP-WWF_2000-1328-min.jpg

670 ms

spinner.gif

spinner.gif

562 ms

ad_status.js

ad_status.js

290 ms

social-share-facebook-white-circle.svg

social-share-facebook-white-circle.svg

416 ms

social-share-twitter-white.svg

social-share-twitter-white.svg

418 ms

social-share-linkedin-white.svg

social-share-linkedin-white.svg

416 ms

social-share-whatsapp-white.svg

social-share-whatsapp-white.svg

419 ms

social-share-email-white.svg

social-share-email-white.svg

420 ms

WWF_Logo_Small_RGB_72dpi.jpg

WWF_Logo_Small_RGB_72dpi.jpg

421 ms

footer-facebook-icn.svg

footer-facebook-icn.svg

537 ms

footer-twitter-icn.svg

footer-twitter-icn.svg

540 ms

footer-instagram-icn.svg

footer-instagram-icn.svg

538 ms

footer-youtube-icn.svg

footer-youtube-icn.svg

542 ms

footer-linkedin-icn.svg

footer-linkedin-icn.svg

541 ms

arrow--up.svg

arrow--up.svg

552 ms

wwf-webfont.woff

wwf-webfont.woff

626 ms

SourceSerifPro-Regular.otf.woff

SourceSerifPro-Regular.otf.woff

551 ms

SourceSerifPro-Semibold.otf.woff

SourceSerifPro-Semibold.otf.woff

617 ms

SourceSansPro-Semibold.otf.woff

SourceSansPro-Semibold.otf.woff

624 ms

SourceSansPro-Bold.otf.woff

SourceSansPro-Bold.otf.woff

701 ms

SourceSansPro-Regular.otf.woff

SourceSansPro-Regular.otf.woff

717 ms

SourceSansPro-Light.otf.woff

SourceSansPro-Light.otf.woff

647 ms

9Z66e_kIUHiT36NNaH3ECtVnZbQwRKz1JAady_W2534.js

9Z66e_kIUHiT36NNaH3ECtVnZbQwRKz1JAady_W2534.js

205 ms

embed.js

embed.js

110 ms

profile

profile

415 ms

polyfill.min.js

polyfill.min.js

781 ms

KFOmCnqEu92Fr1Mu4mxM.woff

KFOmCnqEu92Fr1Mu4mxM.woff

163 ms

KFOlCnqEu92Fr1MmEU9fBBc-.woff

KFOlCnqEu92Fr1MmEU9fBBc-.woff

167 ms

id

id

14 ms

Create

Create

127 ms

GenerateIT

GenerateIT

30 ms

profile

profile

90 ms

Accessibility Review

earthhour.fr accessibility score

79

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

<frame> or <iframe> elements do not have a title

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

Best Practices

earthhour.fr 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

earthhour.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

    FR

  • Language Claimed

    FR

  • Encoding

    UTF-8

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

earthhour.fr

Open Graph description is not detected on the main page of Earth Hour. 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: