Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

dur.ac.uk

Durham University

Page Load Speed

3.5 sec in total

First Response

245 ms

Resources Loaded

2.7 sec

Page Rendered

533 ms

dur.ac.uk screenshot

About Website

Visit dur.ac.uk now to see the best up-to-date Dur content for United Kingdom and also check out these interesting facts you probably never knew about dur.ac.uk

Durham University Homepage

Visit dur.ac.uk

Key Findings

We analyzed Dur.ac.uk page load time and found that the first response time was 245 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

dur.ac.uk performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

34/100

10%

LCP (Largest Contentful Paint)

Value24.3 s

0/100

25%

SI (Speed Index)

Value10.0 s

9/100

10%

TBT (Total Blocking Time)

Value2,930 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.007

100/100

15%

TTI (Time to Interactive)

Value22.2 s

1/100

10%

Network Requests Diagram

dur.ac.uk

245 ms

dur.ac.uk

445 ms

style-durham-20231018.css

226 ms

swiper.css

212 ms

perfect-scrollbar.css

217 ms

Our browser made a total of 86 requests to load all elements on the main page. We found that 22% of them (19 requests) were addressed to the original Dur.ac.uk, 37% (32 requests) were made to Pxl-duracuk.terminalfour.net and 8% (7 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (589 ms) relates to the external source Googletagmanager.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 244.8 kB (19%)

Content Size

1.3 MB

After Optimization

1.0 MB

In fact, the total size of Dur.ac.uk main page is 1.3 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 a small number of websites need less resources to load. Images take 391.2 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 192.3 kB

  • Original 213.7 kB
  • After minification 185.6 kB
  • After compression 21.4 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 28.1 kB, which is 13% 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 192.3 kB or 90% of the original size.

Image Optimization

-12%

Potential reduce by 47.7 kB

  • Original 391.2 kB
  • After minification 343.5 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, Dur needs image optimization as it can save up to 47.7 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 4.2 kB

  • Original 347.9 kB
  • After minification 347.9 kB
  • After compression 343.7 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. This website has mostly compressed JavaScripts.

CSS Optimization

-0%

Potential reduce by 610 B

  • Original 319.7 kB
  • After minification 319.7 kB
  • After compression 319.1 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. Dur.ac.uk has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 28 (36%)

Requests Now

77

After Optimization

49

The browser has sent 77 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dur. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

dur.ac.uk accessibility score

100

Accessibility Issues

Best Practices

dur.ac.uk best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

dur.ac.uk SEO score

93

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

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

High

Document uses legible font sizes

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 Dur.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 Dur.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

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