Tools & Wizards About Us
swissmooc.ch screenshot

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

swissmooc.ch

SwissMOOC Service - SwissMOOC Service

Page Load Speed

4.4 sec in total

First Response

632 ms

Resources Loaded

3.3 sec

Page Rendered

414 ms

swissmooc.ch screenshot

About Website

Click here to check amazing SwissMOOC content for Switzerland. Otherwise, check out these important facts you probably never knew about swissmooc.ch

Visit swissmooc.ch

Key Findings

We analyzed Swissmooc.ch page load time and found that the first response time was 632 ms and then it took 3.7 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

swissmooc.ch performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value14.6 s

0/100

25%

SI (Speed Index)

Value5.9 s

47/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.5 s

47/100

10%

Network Requests Diagram

www.swissmooc.ch

632 ms

css

32 ms

42d5adcbca.js

53 ms

icon

50 ms

catalog.min.css

621 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 61% of them (25 requests) were addressed to the original Swissmooc.ch, 20% (8 requests) were made to Fonts.gstatic.com and 12% (5 requests) were made to Os.zhdk.cloud.switch.ch. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Os.zhdk.cloud.switch.ch.

Page Optimization Overview & Recommendations

Page size can be reduced by 393.6 kB (25%)

Content Size

1.6 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Swissmooc.ch main page is 1.6 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. 35% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 23.2 kB

  • Original 28.5 kB
  • After minification 20.9 kB
  • After compression 5.3 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 7.6 kB, which is 27% 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 23.2 kB or 81% of the original size.

Image Optimization

-4%

Potential reduce by 46.5 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. SwissMOOC images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 15 B

  • Original 4.8 kB
  • After minification 4.8 kB
  • After compression 4.8 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

-86%

Potential reduce by 323.8 kB

  • Original 378.0 kB
  • After minification 378.0 kB
  • After compression 54.2 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. Swissmooc.ch needs all CSS files to be minified and compressed as it can save up to 323.8 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (47%)

Requests Now

32

After Optimization

17

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SwissMOOC. 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 as a result speed up the page load time.

Network Requests Diagram

www.swissmooc.ch

www.swissmooc.ch

632 ms

css

css

32 ms

42d5adcbca.js

42d5adcbca.js

53 ms

icon

icon

50 ms

catalog.min.css

catalog.min.css

621 ms

chunk-vendors.ca616c2d.js

chunk-vendors.ca616c2d.js

638 ms

auto-login.db792aaf.js

auto-login.db792aaf.js

317 ms

system-messages.59fc62e0.js

system-messages.59fc62e0.js

316 ms

popper.min.js

popper.min.js

320 ms

bootstrap.min.js

bootstrap.min.js

538 ms

perfect-scrollbar.min.js

perfect-scrollbar.min.js

424 ms

countup.min.js

countup.min.js

324 ms

choices.min.js

choices.min.js

539 ms

prism.min.js

prism.min.js

540 ms

highlight.min.js

highlight.min.js

737 ms

rellax.min.js

rellax.min.js

628 ms

tilt.min.js

tilt.min.js

631 ms

parallax.min.js

parallax.min.js

643 ms

catalog.min.js

catalog.min.js

643 ms

main.d60780b8.js

main.d60780b8.js

643 ms

le-1564x780-marinka-valkering.jpg

le-1564x780-marinka-valkering.jpg

1086 ms

logo.sms.png

logo.sms.png

200 ms

our-mission.jpg

our-mission.jpg

209 ms

unige.png

unige.png

209 ms

uzh.jpg

uzh.jpg

210 ms

ffhs.png

ffhs.png

216 ms

epfl.png

epfl.png

306 ms

ethz.jpg

ethz.jpg

308 ms

zhaw.png

zhaw.png

312 ms

asset-v1-ffhs-gm101idm-2021-hs-3-type-asset-block-kurslogo-haupseite-2-anne-helsdingen.png

asset-v1-ffhs-gm101idm-2021-hs-3-type-asset-block-kurslogo-haupseite-2-anne-helsdingen.png

1208 ms

prep-exa-500px.jpg

prep-exa-500px.jpg

1314 ms

thymio-cover.jpg

thymio-cover.jpg

1817 ms

primula-vulgaris.jpeg

primula-vulgaris.jpeg

1808 ms

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoa4Omb2Rm.ttf

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjoa4Omb2Rm.ttf

14 ms

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjojISmb2Rm.ttf

BngbUXZYTXPIvIBgJJSb6s3BzlRRfKOFbvjojISmb2Rm.ttf

22 ms

LDItaoyNOAY6Uewc665JcIzCKsKc_M9flwmM.otf

LDItaoyNOAY6Uewc665JcIzCKsKc_M9flwmM.otf

35 ms

KFOlCnqEu92Fr1MmWUlfBBc9.ttf

KFOlCnqEu92Fr1MmWUlfBBc9.ttf

35 ms

KFOlCnqEu92Fr1MmYUtfBBc9.ttf

KFOlCnqEu92Fr1MmYUtfBBc9.ttf

35 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

35 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

35 ms

KFOlCnqEu92Fr1MmSU5fBBc9.ttf

KFOlCnqEu92Fr1MmSU5fBBc9.ttf

32 ms

Accessibility Review

swissmooc.ch accessibility score

86

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.

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

ARIA IDs are not unique

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

swissmooc.ch best practices score

75

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

Browser errors were logged to the console

SEO Factors

swissmooc.ch SEO score

77

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

High

robots.txt is not valid

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Swissmooc.ch can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Swissmooc.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

swissmooc.ch

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