4.1 sec in total
917 ms
2.9 sec
258 ms
Click here to check amazing Library EPFL content for Switzerland. Otherwise, check out these important facts you probably never knew about library.epfl.ch
Visit library.epfl.chWe analyzed Library.epfl.ch page load time and found that the first response time was 917 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
library.epfl.ch performance score
name
value
score
weighting
Value5.6 s
5/100
10%
Value6.0 s
13/100
25%
Value11.7 s
4/100
10%
Value5,050 ms
0/100
30%
Value0.158
73/100
15%
Value23.7 s
1/100
10%
917 ms
767 ms
188 ms
279 ms
295 ms
Our browser made a total of 74 requests to load all elements on the main page. We found that 22% of them (16 requests) were addressed to the original Library.epfl.ch, 22% (16 requests) were made to Epfl.ch and 18% (13 requests) were made to Actu.epfl.ch. The less responsive or slowest element that took the longest time to load (917 ms) belongs to the original domain Library.epfl.ch.
Page size can be reduced by 378.3 kB (42%)
908.8 kB
530.5 kB
In fact, the total size of Library.epfl.ch main page is 908.8 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. 50% of websites need less resources to load. Images take 396.1 kB which makes up the majority of the site volume.
Potential reduce by 38.4 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 9.9 kB, which is 21% 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 38.4 kB or 80% of the original size.
Potential reduce by 42.5 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. Obviously, Library EPFL needs image optimization as it can save up to 42.5 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 184.3 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 184.3 kB or 58% of the original size.
Potential reduce by 113.1 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. Library.epfl.ch needs all CSS files to be minified and compressed as it can save up to 113.1 kB or 78% of the original size.
Number of requests can be reduced by 35 (48%)
73
38
The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Library EPFL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.
library.epfl.ch
917 ms
epfl.css
767 ms
homePortal.css
188 ms
jahia.css
279 ms
main.css
295 ms
jquery.min.js
30 ms
jquery.plugins.js
382 ms
epfl.js
280 ms
socialshare.js
270 ms
jquery-1.10.2.min.js
11 ms
wsi.ashx
184 ms
my-server.png
201 ms
grey-facebook-round.png
279 ms
grey-twitter-round.png
277 ms
grey-linkedin-round.png
278 ms
grey-googleplus-round.png
279 ms
grey-mail-round.png
374 ms
page_accueil_1.jpg
784 ms
underline.gif
131 ms
epfl_small.png
584 ms
sprites-arrow.png
191 ms
sprites.png
584 ms
magnifier.png
584 ms
separator.png
586 ms
icon_home_white.png
445 ms
slash.png
566 ms
163
368 ms
dot.png
236 ms
icons-all.png
329 ms
widgets.js
87 ms
underline-white.gif
383 ms
arrow-login.png
474 ms
ga.js
42 ms
header_en.jsp
436 ms
__utm.gif
34 ms
__utm.gif
39 ms
timeline.d11f7a3b3287fb94220e8ee6d03cc772.js
145 ms
syndication
84 ms
701666751059259392
280 ms
actu.afe21e52c775.css
195 ms
jquery-epfl.min.js
385 ms
globalnav.js
280 ms
actu.67268b7f9c40.js
192 ms
proxy.jpg
288 ms
timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css
34 ms
timeline.47ab5d19e8ed22531abcf4f86f3ae53a.light.ltr.css
81 ms
XrjAkjR__normal.png
182 ms
VsIG0qL7_normal.png
185 ms
40c80d07581b7d3ea6828a3f7e2c4d65_normal.jpeg
218 ms
CdvVWvjWwAAjBwU.jpg:small
269 ms
CdrNcoaWIAAHTzl.jpg:small
291 ms
CdrR6SkXIAI549W.png:small
328 ms
CdCOldTUAAEVPyv.jpg:small
304 ms
CcXR-qGW4AAoMwE.jpg:small
446 ms
CcI9CuRWwAEAKOS.jpg:small
353 ms
CcHnZCPVIAAClNa.jpg:small
374 ms
syndication_bundle_v1_64fcb3dd2f6da5b5f976d91a319ef73e329c1a5d.css
44 ms
syndication_bundle_v1_64fcb3dd2f6da5b5f976d91a319ef73e329c1a5d.css
88 ms
160x90.jpg
191 ms
arrow-more.gif
93 ms
160x90.jpg
186 ms
160x90.jpg
189 ms
160x90.jpg
195 ms
160x90.jpg
187 ms
160x90.jpg
196 ms
160x90.jpg
328 ms
160x90.jpg
369 ms
160x90.jpg
372 ms
160x90.jpg
373 ms
__utm.gif
32 ms
link_v1_e64f66f5650df987d97cc5f00c4cb5987f367028.svg
6 ms
proxy.jpg
72 ms
print.css
96 ms
jot.html
30 ms
library.epfl.ch accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
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
<frame> or <iframe> elements do not have a title
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
library.epfl.ch best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
library.epfl.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
Tap targets are not sized appropriately
N/A
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Library.epfl.ch can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Library.epfl.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.
library.epfl.ch
Open Graph description is not detected on the main page of Library EPFL. 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: