Tools & Wizards About Us
louvrelens.fr screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 75% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

louvrelens.fr

Site officiel du musée du Louvre-Lens

Page Load Speed

4.3 sec in total

First Response

350 ms

Resources Loaded

3.8 sec

Page Rendered

226 ms

louvrelens.fr screenshot

About Website

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

Découvrez le musée, les œuvres de la Galerie du Temps, les expositions temporaires, la programmation et préparez votre visite au Louvre-Lens.

Visit louvrelens.fr

Key Findings

We analyzed Louvrelens.fr page load time and found that the first response time was 350 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

louvrelens.fr performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value11.3 s

0/100

25%

SI (Speed Index)

Value28.7 s

0/100

10%

TBT (Total Blocking Time)

Value30,790 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value41.8 s

0/100

10%

Network Requests Diagram

louvrelens.fr

350 ms

570 ms

main.css

275 ms

main.css

180 ms

barebone.jsp

557 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that 88% of them (42 requests) were addressed to the original Louvrelens.fr, 6% (3 requests) were made to S7.addthis.com and 4% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Louvrelens.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 961.6 kB (40%)

Content Size

2.4 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Louvrelens.fr main page is 2.4 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. 30% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 66.9 kB

  • Original 88.9 kB
  • After minification 78.5 kB
  • After compression 22.0 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 10.4 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 66.9 kB or 75% of the original size.

Image Optimization

-7%

Potential reduce by 78.7 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. Louvre Lens images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 557.9 kB

  • Original 848.3 kB
  • After minification 823.7 kB
  • After compression 290.4 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 557.9 kB or 66% of the original size.

CSS Optimization

-85%

Potential reduce by 258.1 kB

  • Original 304.2 kB
  • After minification 304.1 kB
  • After compression 46.0 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. Louvrelens.fr needs all CSS files to be minified and compressed as it can save up to 258.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (28%)

Requests Now

46

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Louvre Lens. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

louvrelens.fr

louvrelens.fr

350 ms

570 ms

main.css

main.css

275 ms

main.css

main.css

180 ms

barebone.jsp

barebone.jsp

557 ms

main.css

main.css

290 ms

jquery.js

jquery.js

303 ms

bgstretcher.js

bgstretcher.js

267 ms

jquery.jcarousel.js

jquery.jcarousel.js

354 ms

jquery.imagemapManager.js

jquery.imagemapManager.js

456 ms

jquery.footerToggler.js

jquery.footerToggler.js

461 ms

addthis_widget.js

addthis_widget.js

12 ms

main.js

main.js

390 ms

ga.js

ga.js

136 ms

default-bckgrd.jpg

default-bckgrd.jpg

559 ms

nav-louvreparis.jpg

nav-louvreparis.jpg

189 ms

company_logo

company_logo

190 ms

small-map-transparent-overlay.png

small-map-transparent-overlay.png

184 ms

nav-small-map.png

nav-small-map.png

188 ms

nav-item-separator.png

nav-item-separator.png

188 ms

nav-search-bg.png

nav-search-bg.png

360 ms

input_shadow.png

input_shadow.png

373 ms

search.png

search.png

373 ms

nav-search-plus-sprite.png

nav-search-plus-sprite.png

379 ms

nav-tools-menu-sprite.png

nav-tools-menu-sprite.png

378 ms

nav-tools-black-overlay.png

nav-tools-black-overlay.png

534 ms

home-logo.png

home-logo.png

642 ms

home-big-map-transparent-overlay.png

home-big-map-transparent-overlay.png

559 ms

home-big-map.png

home-big-map.png

563 ms

bat1.png

bat1.png

567 ms

bat2.png

bat2.png

710 ms

bat3.png

bat3.png

742 ms

bat4.png

bat4.png

740 ms

bat5.png

bat5.png

742 ms

bat6.png

bat6.png

761 ms

bat7.png

bat7.png

815 ms

footer-bckgrd.png

footer-bckgrd.png

1222 ms

black-repeatable-bg.png

black-repeatable-bg.png

931 ms

footer-arrow.png

footer-arrow.png

929 ms

appli-icons-sprite.png

appli-icons-sprite.png

933 ms

934 ms

__utm.gif

__utm.gif

11 ms

300lo.json

300lo.json

20 ms

ie67-css.d20541e614a2e495c355.js

ie67-css.d20541e614a2e495c355.js

9 ms

background-overlay.png

background-overlay.png

288 ms

homebg-menu-sprite.png

homebg-menu-sprite.png

190 ms

f5aabb00-a01a-4551-ab33-e5083d1fabfe

f5aabb00-a01a-4551-ab33-e5083d1fabfe

993 ms

sh.7c7179124ea24ac6ba46caac.html

sh.7c7179124ea24ac6ba46caac.html

26 ms

Accessibility Review

louvrelens.fr accessibility score

90

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

Best Practices

louvrelens.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

High

Missing source maps for large first-party JavaScript

SEO Factors

louvrelens.fr SEO score

98

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 Louvrelens.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 Louvrelens.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

louvrelens.fr

Open Graph description is not detected on the main page of Louvre Lens. 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: