Tools & Wizards About Us
etvj.ch screenshot

Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

etvj.ch

École | École Technique De La Vallée De Joux | Le Chenit

Page Load Speed

6.8 sec in total

First Response

2.2 sec

Resources Loaded

4.2 sec

Page Rendered

414 ms

etvj.ch screenshot

About Website

Visit etvj.ch now to see the best up-to-date Etvj content for Switzerland and also check out these interesting facts you probably never knew about etvj.ch

L'école technique de la vallée de Joux est un établissement d'enseignement professionnel, réputé pour le haut niveau de ses réalisations techniques et artisanales.

Visit etvj.ch

Key Findings

We analyzed Etvj.ch page load time and found that the first response time was 2.2 sec and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

etvj.ch performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

73/100

10%

LCP (Largest Contentful Paint)

Value7.1 s

5/100

25%

SI (Speed Index)

Value6.6 s

38/100

10%

TBT (Total Blocking Time)

Value1,170 ms

21/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value12.7 s

14/100

10%

Network Requests Diagram

www.etvj.ch

2181 ms

minified.js

147 ms

focus-within-polyfill.js

423 ms

polyfill.min.js

445 ms

bootstrap-features.dbbc2053.bundle.min.js

13 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Etvj.ch, 63% (27 requests) were made to Static.parastorage.com and 26% (11 requests) were made to Static.wixstatic.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Etvj.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 610.1 kB (69%)

Content Size

882.8 kB

After Optimization

272.7 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Etvj.ch main page is 882.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 60% of websites need less resources to load. HTML takes 752.6 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 605.8 kB

  • Original 752.6 kB
  • After minification 750.9 kB
  • After compression 146.8 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 605.8 kB or 80% of the original size.

Image Optimization

-5%

Potential reduce by 4.3 kB

  • Original 86.5 kB
  • After minification 82.2 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. Etvj images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 48 B

  • Original 43.7 kB
  • After minification 43.7 kB
  • After compression 43.7 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 10 (36%)

Requests Now

28

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 28 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Etvj. 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 as a result speed up the page load time.

Network Requests Diagram

www.etvj.ch

www.etvj.ch

2181 ms

minified.js

minified.js

147 ms

focus-within-polyfill.js

focus-within-polyfill.js

423 ms

polyfill.min.js

polyfill.min.js

445 ms

bootstrap-features.dbbc2053.bundle.min.js

bootstrap-features.dbbc2053.bundle.min.js

13 ms

main.c5638ec5.bundle.min.js

main.c5638ec5.bundle.min.js

12 ms

lodash.min.js

lodash.min.js

294 ms

react.production.min.js

react.production.min.js

300 ms

siteTags.bundle.min.js

siteTags.bundle.min.js

297 ms

wix-perf-measure.bundle.min.js

wix-perf-measure.bundle.min.js

310 ms

react-dom.production.min.js

react-dom.production.min.js

309 ms

thunderbolt

thunderbolt

604 ms

logo-etvj-3.png

logo-etvj-3.png

1605 ms

034f08_c748ecd06741411aac959744f1349ce4f000.jpg

034f08_c748ecd06741411aac959744f1349ce4f000.jpg

680 ms

icons3.png

icons3.png

624 ms

034f08_02097f7eb70f469d91e77d4747d1692c~mv2.jpg

034f08_02097f7eb70f469d91e77d4747d1692c~mv2.jpg

625 ms

d22640_0575aa12f52d4561ad5f91c8ff29e856~mv2.jpg

d22640_0575aa12f52d4561ad5f91c8ff29e856~mv2.jpg

623 ms

034f08_323362f13d574aab9eb77b553d19d3e0~mv2.jpg

034f08_323362f13d574aab9eb77b553d19d3e0~mv2.jpg

625 ms

034f08_978eb32b0fc840f295523687ac9cdd51~mv2.jpg

034f08_978eb32b0fc840f295523687ac9cdd51~mv2.jpg

678 ms

034f08_d4e6ea0e53354ae4a2f7c4b229b056b1~mv2.jpg

034f08_d4e6ea0e53354ae4a2f7c4b229b056b1~mv2.jpg

710 ms

034f08_f6d4ad6b9249442dbbb6bafaa7b700b1~mv2.jpg

034f08_f6d4ad6b9249442dbbb6bafaa7b700b1~mv2.jpg

934 ms

logo-etvj.png

logo-etvj.png

712 ms

ETVJ_Logo_tagline_vaud_blanc.png

ETVJ_Logo_tagline_vaud_blanc.png

945 ms

elementory-browser-support.min.js

elementory-browser-support.min.js

166 ms

c5749443-93da-4592-b794-42f28d62ef72.woff

c5749443-93da-4592-b794-42f28d62ef72.woff

42 ms

192dac76-a6d9-413d-bb74-22308f2e0cc5.woff

192dac76-a6d9-413d-bb74-22308f2e0cc5.woff

77 ms

0a3939d0-3833-4db3-8b85-f64c2b3350d2.woff

0a3939d0-3833-4db3-8b85-f64c2b3350d2.woff

40 ms

4021a3b9-f782-438b-aeb4-c008109a8b64.woff

4021a3b9-f782-438b-aeb4-c008109a8b64.woff

41 ms

b56b944e-bbe0-4450-a241-de2125d3e682.woff

b56b944e-bbe0-4450-a241-de2125d3e682.woff

78 ms

6f8d1983-4d34-4fa4-9110-988f6c495757.woff

6f8d1983-4d34-4fa4-9110-988f6c495757.woff

79 ms

03805817-4611-4dbc-8c65-0f73031c3973.woff

03805817-4611-4dbc-8c65-0f73031c3973.woff

80 ms

908c4810-64db-4b46-bb8e-823eb41f68c0.woff

908c4810-64db-4b46-bb8e-823eb41f68c0.woff

76 ms

AvenirLTW05-35Light.woff

AvenirLTW05-35Light.woff

79 ms

cgaIrkaP9Empe8_PwXbajD8E0i7KZn-EPnyo3HZu7kw.woff

cgaIrkaP9Empe8_PwXbajD8E0i7KZn-EPnyo3HZu7kw.woff

78 ms

dI-qzxlKVQA6TUC5RKSb3z8E0i7KZn-EPnyo3HZu7kw.woff

dI-qzxlKVQA6TUC5RKSb3z8E0i7KZn-EPnyo3HZu7kw.woff

78 ms

thunderbolt

thunderbolt

73 ms

deprecation-en.v5.html

deprecation-en.v5.html

26 ms

bolt-performance

bolt-performance

88 ms

deprecation-style.v5.css

deprecation-style.v5.css

20 ms

right-arrow.svg

right-arrow.svg

39 ms

WixMadeforDisplay_W_Bd.woff

WixMadeforDisplay_W_Bd.woff

21 ms

WixMadeforText_W_Bd.woff

WixMadeforText_W_Bd.woff

19 ms

WixMadeforText_W_Rg.woff

WixMadeforText_W_Rg.woff

50 ms

Accessibility Review

etvj.ch accessibility score

96

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

etvj.ch best practices score

92

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

Page has valid source maps

SEO Factors

etvj.ch SEO score

90

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

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 Etvj.ch 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 Etvj.ch 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

etvj.ch

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