Tools & Wizards About Us
levaisseau.com screenshot

Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

levaisseau.com

Le Vaisseau, pour découvrir en famille les sciences à Strasbourg

Page Load Speed

3.6 sec in total

First Response

368 ms

Resources Loaded

3 sec

Page Rendered

240 ms

levaisseau.com screenshot

About Website

Click here to check amazing Le Vaisseau content for France. Otherwise, check out these important facts you probably never knew about levaisseau.com

Le Vaisseau, venez découvrir à Strasbourg en famille les sciences à travers des expositions et une programmation culturelle riche dédiées au 3 à 12 ans.

Visit levaisseau.com

Key Findings

We analyzed Levaisseau.com page load time and found that the first response time was 368 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster. This domain responded with an error, which can significantly jeopardize Levaisseau.com rating and web reputation

Performance Metrics

levaisseau.com performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.2 s

3/100

10%

LCP (Largest Contentful Paint)

Value8.0 s

2/100

25%

SI (Speed Index)

Value7.3 s

28/100

10%

TBT (Total Blocking Time)

Value650 ms

46/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.6 s

29/100

10%

Network Requests Diagram

levaisseau.com

368 ms

www.levaisseau.com

690 ms

reset.css

93 ms

global.css

189 ms

scroll.css

180 ms

Our browser made a total of 83 requests to load all elements on the main page. We found that 96% of them (80 requests) were addressed to the original Levaisseau.com, 2% (2 requests) were made to Google-analytics.com and 1% (1 request) were made to Addinto.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Levaisseau.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 461.8 kB (23%)

Content Size

2.0 MB

After Optimization

1.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Levaisseau.com main page is 2.0 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. 25% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 28.4 kB

  • Original 36.1 kB
  • After minification 31.7 kB
  • After compression 7.7 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 4.4 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 28.4 kB or 79% of the original size.

Image Optimization

-10%

Potential reduce by 172.9 kB

  • Original 1.7 MB
  • After minification 1.5 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. Le Vaisseau images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 184.9 kB

  • Original 247.6 kB
  • After minification 174.1 kB
  • After compression 62.7 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 184.9 kB or 75% of the original size.

CSS Optimization

-88%

Potential reduce by 75.6 kB

  • Original 86.1 kB
  • After minification 67.2 kB
  • After compression 10.5 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. Levaisseau.com needs all CSS files to be minified and compressed as it can save up to 75.6 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (49%)

Requests Now

80

After Optimization

41

  • Images
  • JavaScript
  • CSS

The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Le Vaisseau. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

levaisseau.com

levaisseau.com

368 ms

www.levaisseau.com

www.levaisseau.com

690 ms

reset.css

reset.css

93 ms

global.css

global.css

189 ms

scroll.css

scroll.css

180 ms

shadowbox.css

shadowbox.css

195 ms

jquery.js

jquery.js

459 ms

jquery.form.js

jquery.form.js

281 ms

ajaxCallback.js

ajaxCallback.js

195 ms

spip.php

spip.php

283 ms

jquery.scrollto.js

jquery.scrollto.js

280 ms

jquery.localscroll.js

jquery.localscroll.js

281 ms

nsliderfade.js

nsliderfade.js

283 ms

functions.js

functions.js

372 ms

jquery.accessible-news-slider.js

jquery.accessible-news-slider.js

372 ms

flexcroll.js

flexcroll.js

470 ms

jquery.cookie.js

jquery.cookie.js

372 ms

shadowbox.js

shadowbox.js

475 ms

ai2_bkmk.js

ai2_bkmk.js

503 ms

arton1188.jpg

arton1188.jpg

1003 ms

bandeau_01.jpg

bandeau_01.jpg

91 ms

bandeau_02.jpg

bandeau_02.jpg

94 ms

bandeau_03.jpg

bandeau_03.jpg

91 ms

bandeau_04.jpg

bandeau_04.jpg

93 ms

bandeau_05.jpg

bandeau_05.jpg

95 ms

bandeau_06.jpg

bandeau_06.jpg

181 ms

bandeau_07.jpg

bandeau_07.jpg

179 ms

slider-inter-actions-sonores.png

slider-inter-actions-sonores.png

273 ms

slider_Delikat_Essen_03.jpg

slider_Delikat_Essen_03.jpg

640 ms

entree-6-euros-2.png

entree-6-euros-2.png

283 ms

2015-09-Brouhaharium.png

2015-09-Brouhaharium.png

622 ms

rss.gif

rss.gif

270 ms

logo-levaisseau-retina.png

logo-levaisseau-retina.png

433 ms

bg_ariane_left.png

bg_ariane_left.png

350 ms

bg_ariane_right.png

bg_ariane_right.png

357 ms

bg_langue.png

bg_langue.png

441 ms

drap_fr.jpg

drap_fr.jpg

446 ms

drap_de.jpg

drap_de.jpg

523 ms

drap_en.jpg

drap_en.jpg

537 ms

bg_page_top.png

bg_page_top.png

539 ms

bg_menu_slider.png

bg_menu_slider.png

613 ms

bt_newsletter.jpg

bt_newsletter.jpg

610 ms

home_evt_top.jpg

home_evt_top.jpg

612 ms

bt_tt_prog.jpg

bt_tt_prog.jpg

680 ms

home_evt_l1.jpg

home_evt_l1.jpg

684 ms

date_evt_famille.gif

date_evt_famille.gif

697 ms

home_evt_l2.jpg

home_evt_l2.jpg

701 ms

home_evt_l3.jpg

home_evt_l3.jpg

702 ms

bg_page_bottom.png

bg_page_bottom.png

769 ms

bg_evenement_top.jpg

bg_evenement_top.jpg

774 ms

bt_actu_enseignant.jpg

bt_actu_enseignant.jpg

787 ms

bt_actu_famille.jpg

bt_actu_famille.jpg

791 ms

actu_date_enseignant.gif

actu_date_enseignant.gif

788 ms

puce_evenement.gif

puce_evenement.gif

859 ms

actu_date_famille.gif

actu_date_famille.gif

862 ms

analytics.js

analytics.js

7 ms

collect

collect

12 ms

shadowbox-fr.js

shadowbox-fr.js

829 ms

shadowbox-img.js

shadowbox-img.js

827 ms

shadowbox-iframe.js

shadowbox-iframe.js

831 ms

shadowbox-jquery.js

shadowbox-jquery.js

895 ms

home_bottom.png

home_bottom.png

1075 ms

home_bt_tarifs.png

home_bt_tarifs.png

835 ms

home_bt_plan.png

home_bt_plan.png

830 ms

home_bt_billet.png

home_bt_billet.png

744 ms

home_bt_qsn.png

home_bt_qsn.png

803 ms

footer_top.png

footer_top.png

808 ms

bt_search.jpg

bt_search.jpg

735 ms

send_friend.jpg

send_friend.jpg

727 ms

bt_stop.png

bt_stop.png

655 ms

bt_slider.png

bt_slider.png

709 ms

bt_dailymotion.jpg

bt_dailymotion.jpg

722 ms

bt_facebook.jpg

bt_facebook.jpg

650 ms

flickr.jpg

flickr.jpg

637 ms

bt_rss.jpg

bt_rss.jpg

636 ms

bt_contact.jpg

bt_contact.jpg

635 ms

bt_mentions.jpg

bt_mentions.jpg

628 ms

bt_faq.jpg

bt_faq.jpg

635 ms

bt_presse.jpg

bt_presse.jpg

634 ms

bt_recrutement.jpg

bt_recrutement.jpg

637 ms

foot_top.jpg

foot_top.jpg

570 ms

puce_footer.jpg

puce_footer.jpg

627 ms

impression.css

impression.css

94 ms

Accessibility Review

levaisseau.com accessibility score

93

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.

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

levaisseau.com best practices score

58

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

User Experience

Impact

Issue

High

Serves images with low resolution

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

levaisseau.com SEO score

62

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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 Levaisseau.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 Levaisseau.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

levaisseau.com

Open Graph description is not detected on the main page of Le Vaisseau. 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: