Tools & Wizards About Us
ox.ac.uk screenshot

Report Summary

  • 13

    Performance

    Renders faster than
    25% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

ox.ac.uk

University of Oxford

Page Load Speed

2.6 sec in total

First Response

241 ms

Resources Loaded

2 sec

Page Rendered

299 ms

ox.ac.uk screenshot

About Website

Click here to check amazing Ox content for United Kingdom. Otherwise, check out these important facts you probably never knew about ox.ac.uk

Oxford University provides world-class research and education to benefit society on a local, regional, national and global scale.

Visit ox.ac.uk

Key Findings

We analyzed Ox.ac.uk page load time and found that the first response time was 241 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 45% of websites can load faster.

Performance Metrics

ox.ac.uk performance score

13

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.4 s

1/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value7.7 s

24/100

10%

TBT (Total Blocking Time)

Value1,490 ms

14/100

30%

CLS (Cumulative Layout Shift)

Value0.347

32/100

15%

TTI (Time to Interactive)

Value13.1 s

12/100

10%

Network Requests Diagram

ox.ac.uk

241 ms

www.ox.ac.uk

319 ms

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155 ms

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172 ms

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164 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 70% of them (47 requests) were addressed to the original Ox.ac.uk, 6% (4 requests) were made to Google-analytics.com and 6% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (698 ms) belongs to the original domain Ox.ac.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (36%)

Content Size

3.2 MB

After Optimization

2.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ox.ac.uk main page is 3.2 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. 65% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 80.3 kB

  • Original 98.5 kB
  • After minification 84.1 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. This page needs HTML code to be minified as it can gain 14.4 kB, which is 15% 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 80.3 kB or 82% of the original size.

Image Optimization

-3%

Potential reduce by 51.7 kB

  • Original 1.8 MB
  • After minification 1.8 MB

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. Ox images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 563.4 kB

  • Original 786.8 kB
  • After minification 691.7 kB
  • After compression 223.4 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 563.4 kB or 72% of the original size.

CSS Optimization

-87%

Potential reduce by 455.0 kB

  • Original 525.9 kB
  • After minification 513.0 kB
  • After compression 70.8 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. Ox.ac.uk needs all CSS files to be minified and compressed as it can save up to 455.0 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (52%)

Requests Now

60

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ox. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

ox.ac.uk

ox.ac.uk

241 ms

www.ox.ac.uk

www.ox.ac.uk

319 ms

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155 ms

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172 ms

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164 ms

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css

25 ms

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244 ms

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163 ms

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264 ms

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263 ms

jquery.xdomainrequest.min.js

jquery.xdomainrequest.min.js

5 ms

contact_search.js

contact_search.js

9 ms

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267 ms

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338 ms

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340 ms

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486 ms

analytics.js

analytics.js

4 ms

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15 ms

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menu_arrow.png

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615 ms

search-icon.png

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82 ms

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Accessibility Review

ox.ac.uk accessibility score

100

Accessibility Issues

Best Practices

ox.ac.uk best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

ox.ac.uk SEO score

98

Search Engine Optimization Advices

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

High

Tap targets are not sized appropriately

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 Ox.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 Ox.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

ox.ac.uk

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