2.7 sec in total
260 ms
2.4 sec
94 ms
Click here to check amazing Vlebb Leeds content for United Kingdom. Otherwise, check out these important facts you probably never knew about vlebb.leeds.ac.uk
Visit vlebb.leeds.ac.ukWe analyzed Vlebb.leeds.ac.uk page load time and found that the first response time was 260 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.
vlebb.leeds.ac.uk performance score
name
value
score
weighting
Value2.1 s
80/100
10%
Value2.3 s
93/100
25%
Value3.3 s
91/100
10%
Value0 ms
100/100
30%
Value0.115
86/100
15%
Value2.1 s
99/100
10%
260 ms
429 ms
86 ms
175 ms
256 ms
Our browser made a total of 51 requests to load all elements on the main page. We found that 92% of them (47 requests) were addressed to the original Vlebb.leeds.ac.uk, 4% (2 requests) were made to Ssl.google-analytics.com and 2% (1 request) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (987 ms) belongs to the original domain Vlebb.leeds.ac.uk.
Page size can be reduced by 1.2 MB (77%)
1.5 MB
356.5 kB
In fact, the total size of Vlebb.leeds.ac.uk main page is 1.5 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. Javascripts take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 38.8 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 38.8 kB or 78% of the original size.
Potential reduce by 7 B
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. Vlebb Leeds images are well optimized though.
Potential reduce by 829.2 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 829.2 kB or 78% of the original size.
Potential reduce by 310.5 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. Vlebb.leeds.ac.uk needs all CSS files to be minified and compressed as it can save up to 310.5 kB or 81% of the original size.
Number of requests can be reduced by 40 (83%)
48
8
The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vlebb Leeds. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 33 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.
vlebb.leeds.ac.uk
260 ms
vlebb.leeds.ac.uk
429 ms
shared.css
86 ms
theme.css
175 ms
brand.css
256 ms
i18n.js
258 ms
cdn.js
259 ms
prototype.js
625 ms
fastinit.js
265 ms
page.js
622 ms
validateForm.js
586 ms
numberLocalizer.js
344 ms
accessibleSelect.js
349 ms
popup.js
349 ms
cookie.js
429 ms
lz-string.js
446 ms
client_cache.js
445 ms
globalNavigation.js
514 ms
UserDataDWRFacade.js
530 ms
MashupDWRFacade.js
531 ms
esapi-compressed.js
688 ms
ESAPI_Standard_en_US.properties.js
618 ms
Base.esapi.properties.js
620 ms
validate_login.js
673 ms
browserSpecificBehavior.js
711 ms
builder.js
704 ms
effects.js
711 ms
dragdrop.js
711 ms
controls.js
765 ms
slider.js
780 ms
lightbox.js
987 ms
quick_links.js
803 ms
MathJax.js
894 ms
icon-core.css
720 ms
icon-listing.css
775 ms
theme1.css
706 ms
theme2.css
731 ms
theme_uol.css
739 ms
iframe_api
118 ms
Bb_newLogo_060.png
85 ms
fonts.gif
85 ms
contrast.gif
87 ms
Leeds_University_logo_min.png
86 ms
Gateway_Learn.jpg
86 ms
utilicons-web-webfont.woff
85 ms
TeX-AMS-MML_HTMLorMML.js
403 ms
ga.js
72 ms
www-widgetapi.js
73 ms
__utm.gif
19 ms
mhchem.js
86 ms
print.css
87 ms
vlebb.leeds.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.
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Some elements have a [tabindex] value greater than 0
vlebb.leeds.ac.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
vlebb.leeds.ac.uk 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
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vlebb.leeds.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 Vlebb.leeds.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.
vlebb.leeds.ac.uk
Open Graph description is not detected on the main page of Vlebb Leeds. 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: