Tools & Wizards About Us
billets.cite-sciences.fr screenshot

Report Summary

  • 25

    Performance

    Renders faster than
    44% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

billets.cite-sciences.fr

Billetterie de la Cité des sciences et de l'industrie | Billetterie - La cité des sciences

Page Load Speed

6.2 sec in total

First Response

1.1 sec

Resources Loaded

4.9 sec

Page Rendered

231 ms

billets.cite-sciences.fr screenshot

About Website

Visit billets.cite-sciences.fr now to see the best up-to-date Bill Et S Cite Sciences content for France and also check out these interesting facts you probably never knew about billets.cite-sciences.fr

Achetez vos billets pour nos expositions, la Cité des enfants, le lab de la Cité des bébés, nos événements, stages et ateliers etc.

Visit billets.cite-sciences.fr

Key Findings

We analyzed Billets.cite-sciences.fr page load time and found that the first response time was 1.1 sec and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

billets.cite-sciences.fr performance score

25

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value4.7 s

32/100

25%

SI (Speed Index)

Value10.8 s

6/100

10%

TBT (Total Blocking Time)

Value5,720 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.023

100/100

15%

TTI (Time to Interactive)

Value17.3 s

4/100

10%

Network Requests Diagram

1111 ms

social_gdpr.css

100 ms

app.css

799 ms

polyfill.min.js

229 ms

orejime.css

403 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Billets.cite-sciences.fr, 16% (5 requests) were made to Cite-sciences.fr and 3% (1 request) were made to Polyfill.io. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Billetterie.cite-sciences.fr.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.5 MB (59%)

Content Size

2.5 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Billets.cite-sciences.fr main page is 2.5 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. 40% of websites need less resources to load. Javascripts take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 40.1 kB

  • Original 51.7 kB
  • After minification 44.3 kB
  • After compression 11.5 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 7.4 kB, which is 14% 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 40.1 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 89 B

  • Original 558.8 kB
  • After minification 558.7 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. Bill Et S Cite Sciences images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 1.1 MB

  • Original 1.5 MB
  • After minification 1.5 MB
  • After compression 379.9 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 1.1 MB or 74% of the original size.

CSS Optimization

-85%

Potential reduce by 337.1 kB

  • Original 396.2 kB
  • After minification 396.2 kB
  • After compression 59.1 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. Billets.cite-sciences.fr needs all CSS files to be minified and compressed as it can save up to 337.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (46%)

Requests Now

24

After Optimization

13

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bill Et S Cite Sciences. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

1111 ms

social_gdpr.css

social_gdpr.css

100 ms

app.css

app.css

799 ms

polyfill.min.js

polyfill.min.js

229 ms

orejime.css

orejime.css

403 ms

orejime.css

orejime.css

406 ms

orejime.js

orejime.js

482 ms

orejime.js

orejime.js

404 ms

kameleoon.js

kameleoon.js

346 ms

manifest.js

manifest.js

282 ms

vendor.js

vendor.js

1307 ms

decode.js

decode.js

281 ms

app.js

app.js

971 ms

gtm.js

gtm.js

190 ms

kameleoon_iframe.html

kameleoon_iframe.html

297 ms

logo-cite.svg

logo-cite.svg

187 ms

flag-fr.svg

flag-fr.svg

182 ms

csm_planetarium-cite-sciences_035340943e.jpg

csm_planetarium-cite-sciences_035340943e.jpg

185 ms

csm_argonaute-cite-sciences_154da65e0b.jpg

csm_argonaute-cite-sciences_154da65e0b.jpg

185 ms

csm_Seeticket_300x300px_02_41d97f5280.jpg

csm_Seeticket_300x300px_02_41d97f5280.jpg

184 ms

csm_expositions-permanentes-cite-sciences_830ad7228a.jpg

csm_expositions-permanentes-cite-sciences_830ad7228a.jpg

277 ms

espaces-enfants-cite-sciences.jpg

espaces-enfants-cite-sciences.jpg

629 ms

abonnement_pass_2023.jpg

abonnement_pass_2023.jpg

376 ms

csm_groupes-cite-2023_820955374e.jpg

csm_groupes-cite-2023_820955374e.jpg

541 ms

logo-rf.svg

logo-rf.svg

282 ms

Regular-Black.woff

Regular-Black.woff

289 ms

Regular-Extrabold.woff

Regular-Extrabold.woff

302 ms

Regular-Bold.woff

Regular-Bold.woff

388 ms

Regular-Medium.woff

Regular-Medium.woff

394 ms

Regular-Regular.woff

Regular-Regular.woff

394 ms

Icons.woff

Icons.woff

434 ms

Accessibility Review

billets.cite-sciences.fr accessibility score

100

Accessibility Issues

Best Practices

billets.cite-sciences.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

billets.cite-sciences.fr SEO score

92

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Billets.cite-sciences.fr can be misinterpreted by Google and other search engines. Our service has detected that French is used on the page, and it does not match the claimed English language. Our system also found out that Billets.cite-sciences.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

billets.cite-sciences.fr

Open Graph description is not detected on the main page of Bill Et S Cite Sciences. 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: