2.5 sec in total
253 ms
1.8 sec
421 ms
Click here to check amazing UCL content for United Kingdom. Otherwise, check out these important facts you probably never knew about ucl.ac.uk
UCL is consistently ranked as one of the top ten universities in the world (QS World University Rankings 2010-2022) and is No.2 in the UK for research power (Research Excellence Framework 2021).
Visit ucl.ac.ukWe analyzed Ucl.ac.uk page load time and found that the first response time was 253 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
ucl.ac.uk performance score
name
value
score
weighting
Value4.6 s
13/100
10%
Value33.8 s
0/100
25%
Value15.8 s
0/100
10%
Value2,350 ms
5/100
30%
Value0.554
13/100
15%
Value30.2 s
0/100
10%
253 ms
219 ms
470 ms
463 ms
510 ms
Our browser made a total of 44 requests to load all elements on the main page. We found that 5% of them (2 requests) were addressed to the original Ucl.ac.uk, 41% (18 requests) were made to Static.ucl.ac.uk and 16% (7 requests) were made to Cdn.ucl.ac.uk. The less responsive or slowest element that took the longest time to load (533 ms) relates to the external source Static.ucl.ac.uk.
Page size can be reduced by 679.4 kB (41%)
1.6 MB
959.5 kB
In fact, the total size of Ucl.ac.uk 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. 70% of websites need less resources to load. Images take 703.4 kB which makes up the majority of the site volume.
Potential reduce by 46.2 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 46.2 kB or 77% of the original size.
Potential reduce by 7.4 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. UCL images are well optimized though.
Potential reduce by 334.7 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 334.7 kB or 64% of the original size.
Potential reduce by 291.2 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. Ucl.ac.uk needs all CSS files to be minified and compressed as it can save up to 291.2 kB or 82% of the original size.
Number of requests can be reduced by 26 (65%)
40
14
The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of UCL. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
ucl.ac.uk
253 ms
www.ucl.ac.uk
219 ms
font-awesome.min.css
470 ms
yepnope.1.5.4-min.js+yepnope.ie-prefix.js.pagespeed.jc.mUTx4DFqxr.js
463 ms
ucl-logo.svg
510 ms
xsearch.png.pagespeed.ic.UtDli1J4nJ.png
78 ms
xquad-view.jpg.pagespeed.ic.FXk1irS6By.jpg
461 ms
1.gif
80 ms
xucl-about.jpg.pagespeed.ic.kC1Qxtriqz.jpg
533 ms
ga.js
10 ms
handlebars.min.js
89 ms
typeahead.bundle.js
90 ms
ucl_typeahead_v2.js
89 ms
jquery.2.0.3.min.js
238 ms
ucl.js
134 ms
2847.js
123 ms
A.style.css+gridset.css,Mcc.MWIfUaRtmC.css.pagespeed.cf.lZNTNY1tJ6.css
158 ms
A.style.css+masthead-desktop.css,Mcc.ODpdsWGnEK.css.pagespeed.cf.432dFNQLpW.css
152 ms
A.gridset.css.pagespeed.cf.e6uVlh1SL4.css
201 ms
jquery.2.0.3.min.js
309 ms
x20140606_095452_WuFengShangProjec.jpg.pagespeed.ic.Y43Cf5bMAu.jpg
259 ms
xglobal-citizenship.jpg.pagespeed.ic.pEBUPmOnhJ.jpg
308 ms
ucl.js
79 ms
ga.js
6 ms
handlebars.min.js
7 ms
typeahead.bundle.js
5 ms
ucl_typeahead_v2.js
3 ms
analytics.js
4 ms
collect
14 ms
uclSearch.min.css
22 ms
iframe_api
60 ms
__utm.gif
20 ms
xtwitter.png.pagespeed.ic.QFC7G96taY.png
89 ms
x400tarkhan.jpg.pagespeed.ic.Qs4PLd1aSh.jpg
89 ms
iframe_api
24 ms
www-widgetapi.js
29 ms
wsFjIJMTUiE
46 ms
www-embed-player-vflZsBgOl.css
7 ms
www-embed-player.js
37 ms
base.js
59 ms
6BOEML_YqI6cKINK5dmh8ZufcXg7sBa4jeB-I9gQ0xI.js
39 ms
ad_status.js
35 ms
2UX7WLTfW3W8TclTUvlFyQ.woff
34 ms
RxZJdnzeo3R5zSexge8UUT8E0i7KZn-EPnyo3HZu7kw.woff
37 ms
ucl.ac.uk 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
ucl.ac.uk 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
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
Page has valid source maps
ucl.ac.uk SEO score
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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ucl.ac.uk 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 Ucl.ac.uk 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.
ucl.ac.uk
Open Graph data is detected on the main page of UCL. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: