4.8 sec in total
299 ms
4.3 sec
255 ms
Welcome to ethz.ch homepage info - get ready to check ETH Z best content for Switzerland right away, or after learning these important things about ethz.ch
Visit ethz.chWe analyzed Ethz.ch page load time and found that the first response time was 299 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
ethz.ch performance score
name
value
score
weighting
Value11.6 s
0/100
10%
Value20.1 s
0/100
25%
Value14.0 s
1/100
10%
Value2,550 ms
4/100
30%
Value0.071
96/100
15%
Value29.7 s
0/100
10%
299 ms
506 ms
105 ms
108 ms
209 ms
Our browser made a total of 38 requests to load all elements on the main page. We found that 92% of them (35 requests) were addressed to the original Ethz.ch, 5% (2 requests) were made to Statse.webtrendslive.com and 3% (1 request) were made to Wtsdc.ethz.ch. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Ethz.ch.
Page size can be reduced by 2.1 MB (40%)
5.2 MB
3.1 MB
In fact, the total size of Ethz.ch main page is 5.2 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. Only 10% of websites need less resources to load. Images take 3.9 MB which makes up the majority of the site volume.
Potential reduce by 71.7 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 33.9 kB, which is 41% 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 71.7 kB or 88% of the original size.
Potential reduce by 1.0 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. Obviously, ETH Z needs image optimization as it can save up to 1.0 MB or 26% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 640.3 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 640.3 kB or 79% of the original size.
Potential reduce by 321.8 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. Ethz.ch needs all CSS files to be minified and compressed as it can save up to 321.8 kB or 89% of the original size.
Number of requests can be reduced by 16 (48%)
33
17
The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ETH Z. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
ethz.ch
299 ms
www.ethz.ch
506 ms
de.html
105 ms
default.css
108 ms
style960.css
209 ms
default.js
895 ms
patch.css
398 ms
webtrends.datacollector.js
399 ms
corp960.png
98 ms
eth_logo.png
99 ms
eth_logo_kurz_schwarz_D_print_300dpi.png
103 ms
search_btn.png
102 ms
imageCarousel.imageformat.carousel.797780616.png
1731 ms
imageCarousel.imageformat.carousel.1139793387.png
1730 ms
imageCarousel.imageformat.carousel.1594008273.png
1832 ms
imageCarousel.imageformat.carousel.1663192989.png
2118 ms
imageCarousel.imageformat.carousel.1409605141.png
774 ms
image.imageformat.textsingle.183026717.png
396 ms
image.imageformat.carousel.1591670305.png
687 ms
image.imageformat.carousel.107394183.png
881 ms
image.imageformat.context.1959646495.png
871 ms
empty_pixel.png
968 ms
eth_website_link_elements.png
973 ms
eth_website_button_pause_play.png
1034 ms
eth_website_buttons.png
1045 ms
eth_kuppel_green_box_960.png
1227 ms
sm_facebook_grey.png
1141 ms
sm_twitter_grey.png
1238 ms
sm_empfehlen.png
1324 ms
eth_website_icons.png
1335 ms
webtrends.min.js
1421 ms
_jcr_content.statusbar.html
1423 ms
_jcr_content.navigation.html
1497 ms
webtrends.replicate.js
112 ms
wtid.js
22 ms
dcs.gif
5 ms
dcs.gif
791 ms
print.css
99 ms
ethz.ch accessibility score
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
Buttons do not have an accessible name
Links do not have a discernible name
ethz.ch best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
ethz.ch SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
DE
DE
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ethz.ch can be misinterpreted by Google and other search engines. Our service has detected that German is used on the page, and it matches the claimed language. Our system also found out that Ethz.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.
ethz.ch
Open Graph description is not detected on the main page of ETH Z. 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: