Access discovery.ucl.ac.uk. UCL Discovery

Report Summary

About Website

Click here to check amazing Discovery UCL content for United Kingdom. Otherwise, check out these important facts you probably never knew about discovery.ucl.ac.uk

UCL Discovery is UCL's open access repository, showcasing and providing access to UCL research outputs from all UCL disciplines.

Visit discovery.ucl.ac.uk

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value7.6 s

4/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value430 ms

65/100

30%

CLS (Cumulative Layout Shift)

Value0.006

100/100

15%

TTI (Time to Interactive)

Value9.1 s

33/100

10%

discovery.ucl.ac.uk

484 ms

jquery-1.4.1.min.js

402 ms

jquery-ui.min.js

640 ms

jquery-ui.css

335 ms

accordion.css

264 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 37% of them (15 requests) were addressed to the original Discovery.ucl.ac.uk, 15% (6 requests) were made to Platform.twitter.com and 12% (5 requests) were made to Ucl.ac.uk. The less responsive or slowest element that took the longest time to load (766 ms) belongs to the original domain Discovery.ucl.ac.uk.

Content Size

1.4 MB

After Optimization

377.4 kB

In fact, the total size of Discovery.ucl.ac.uk main page is 1.4 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. 40% of websites need less resources to load. Javascripts take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 41.3 kB

Original 59.5 kB
After minification 57.4 kB
After compression 18.2 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 41.3 kB or 69% of the original size.

Image Optimization

-10%

Potential reduce by 3.7 kB

Original 35.9 kB
After minification 32.2 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. Discovery UCL images are well optimized though.

JavaScript Optimization

-73%

Potential reduce by 852.4 kB

Original 1.2 MB
After minification 1.0 MB
After compression 311.3 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 852.4 kB or 73% of the original size.

CSS Optimization

-85%

Potential reduce by 87.9 kB

Original 103.5 kB
After minification 73.9 kB
After compression 15.7 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. Discovery.ucl.ac.uk needs all CSS files to be minified and compressed as it can save up to 87.9 kB or 85% of the original size.

Requests Now

After Optimization

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Discovery 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 16 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

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 Discovery.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 Discovery.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.

Social Sharing Optimization

discovery.ucl.ac.uk

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

Report Summary

Performance

Accessibility

Best Practices

SEO

UCL Discovery - UCL Discovery

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)