Tools & Wizards About Us
open.ac.uk screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

open.ac.uk

Distance Learning Courses and Adult Education - The Open University

Page Load Speed

4.4 sec in total

First Response

183 ms

Resources Loaded

3.8 sec

Page Rendered

431 ms

open.ac.uk screenshot

About Website

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

The Open University offers flexible full-time and part-time study, supported distance and open learning for undergraduate and postgraduate courses and qualifications.

Visit open.ac.uk

Key Findings

We analyzed Open.ac.uk page load time and found that the first response time was 183 ms and then it took 4.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

open.ac.uk performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.2 s

1/100

10%

LCP (Largest Contentful Paint)

Value19.7 s

0/100

25%

SI (Speed Index)

Value12.2 s

3/100

10%

TBT (Total Blocking Time)

Value4,090 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value23.9 s

1/100

10%

Network Requests Diagram

open.ac.uk

183 ms

www.open.ac.uk

627 ms

221317523.js

423 ms

headerfooter.min.js

257 ms

headerfooter.css

258 ms

Our browser made a total of 88 requests to load all elements on the main page. We found that 66% of them (58 requests) were addressed to the original Open.ac.uk, 7% (6 requests) were made to Googletagmanager.com and 6% (5 requests) were made to Openuniversity.hawksearch.com. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Open.ac.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 603.7 kB (19%)

Content Size

3.2 MB

After Optimization

2.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Open.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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.1 MB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 83.5 kB

  • Original 97.7 kB
  • After minification 69.1 kB
  • After compression 14.2 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 28.6 kB, which is 29% 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 83.5 kB or 86% of the original size.

Image Optimization

-1%

Potential reduce by 17.9 kB

  • Original 2.1 MB
  • After minification 2.1 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. Open images are well optimized though.

JavaScript Optimization

-51%

Potential reduce by 413.5 kB

  • Original 808.6 kB
  • After minification 771.8 kB
  • After compression 395.1 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 413.5 kB or 51% of the original size.

CSS Optimization

-52%

Potential reduce by 88.8 kB

  • Original 171.3 kB
  • After minification 149.0 kB
  • After compression 82.5 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. Open.ac.uk needs all CSS files to be minified and compressed as it can save up to 88.8 kB or 52% of the original size.

Requests Breakdown

Number of requests can be reduced by 57 (70%)

Requests Now

81

After Optimization

24

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Open. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 36 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

open.ac.uk

open.ac.uk

183 ms

www.open.ac.uk

www.open.ac.uk

627 ms

221317523.js

221317523.js

423 ms

headerfooter.min.js

headerfooter.min.js

257 ms

headerfooter.css

headerfooter.css

258 ms

cassiecookiewidget.css

cassiecookiewidget.css

262 ms

modernizr-3.6.0.min.js

modernizr-3.6.0.min.js

264 ms

jquery-3.5.1.min.js

jquery-3.5.1.min.js

352 ms

jquery-ui.1.12.1.custom.min.js

jquery-ui.1.12.1.custom.min.js

511 ms

spin.js

spin.js

344 ms

ou.widgets.js

ou.widgets.js

347 ms

jquery.actual.js

jquery.actual.js

347 ms

jquery.placeholder.js

jquery.placeholder.js

350 ms

jquery.smartresize.js

jquery.smartresize.js

478 ms

cookies.js

cookies.js

479 ms

main.js

main.js

478 ms

theme.css

theme.css

479 ms

screen.css

screen.css

480 ms

kentico-custom-styles.css

kentico-custom-styles.css

561 ms

dev.css

dev.css

563 ms

ouhome2016-fed19b.css

ouhome2016-fed19b.css

562 ms

secondary-nav.css

secondary-nav.css

564 ms

ou.eep.js

ou.eep.js

574 ms

hawksearch.css

hawksearch.css

21 ms

ou.eep.min.js

ou.eep.min.js

425 ms

OU_Throbber.js

OU_Throbber.js

425 ms

OU_Alerts-fix.js

OU_Alerts-fix.js

425 ms

OU_HawkSearch_Tracking.js

OU_HawkSearch_Tracking.js

426 ms

OU_Nav_Selection.js

OU_Nav_Selection.js

425 ms

ou.menu.nav.js

ou.menu.nav.js

498 ms

ou_search.js

ou_search.js

499 ms

ouhome2014.js

ouhome2014.js

495 ms

gtm.js

gtm.js

152 ms

loader.js

loader.js

51 ms

OU_Logo_Mobile.svg

OU_Logo_Mobile.svg

195 ms

Accordion_Chevron_Down.svg

Accordion_Chevron_Down.svg

194 ms

Search_Icon_Magnifier.svg

Search_Icon_Magnifier.svg

195 ms

TEF-website-banner-horizontal-v2.jpg

TEF-website-banner-horizontal-v2.jpg

630 ms

Homepage_banner_image_lady.jpg

Homepage_banner_image_lady.jpg

626 ms

OU_Logo.svg

OU_Logo.svg

614 ms

TEF-website-banner-mobile-v2.jpg

TEF-website-banner-mobile-v2.jpg

794 ms

train-your-staff2.jpg

train-your-staff2.jpg

613 ms

open-learn.jpg

open-learn.jpg

685 ms

home-research-new.jpg

home-research-new.jpg

1893 ms

OU_Crest_SVG.svg

OU_Crest_SVG.svg

685 ms

OU_Crest_SVG_Mobile.svg

OU_Crest_SVG_Mobile.svg

692 ms

www.open.ac.uk

www.open.ac.uk

696 ms

Social_facebook.svg

Social_facebook.svg

739 ms

Social_twitter.svg

Social_twitter.svg

743 ms

Social_youtube.svg

Social_youtube.svg

741 ms

Social_linkedin.svg

Social_linkedin.svg

744 ms

form-sprites.png

form-sprites.png

796 ms

OU-DAX-tracking.js

OU-DAX-tracking.js

788 ms

style.css

style.css

129 ms

hawk-recommender-common.css

hawk-recommender-common.css

139 ms

hawksearch_plugins.css

hawksearch_plugins.css

135 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

819 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

705 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

780 ms

js

js

79 ms

js

js

76 ms

3fd023e462

3fd023e462

714 ms

d40e602e37

d40e602e37

716 ms

sprite-ou-home.png

sprite-ou-home.png

711 ms

iframe_api

iframe_api

436 ms

hawksearch.min.js

hawksearch.min.js

356 ms

collect

collect

187 ms

www-widgetapi.js

www-widgetapi.js

10 ms

fontawesome-webfont.ttf

fontawesome-webfont.ttf

94 ms

CH3Vvhj0.js

CH3Vvhj0.js

84 ms

js

js

58 ms

wide-360p-packer.jpg

wide-360p-packer.jpg

189 ms

homepage_slate_resized_03251_45159_std.jpg

homepage_slate_resized_03251_45159_std.jpg

526 ms

ceremonies_slate_03242_45514_std.jpg

ceremonies_slate_03242_45514_std.jpg

524 ms

fontawesome-webfont.svg

fontawesome-webfont.svg

118 ms

headerfooter-print.css

headerfooter-print.css

90 ms

print.css

print.css

91 ms

ou-royal-fca-statement.txt

ou-royal-fca-statement.txt

107 ms

launch-3cf91248ece2.min.js

launch-3cf91248ece2.min.js

54 ms

landing

landing

171 ms

destination

destination

73 ms

destination

destination

72 ms

id

id

121 ms

EX5da0992a38a7437a911a554ec00fda36-libraryCode_source.min.js

EX5da0992a38a7437a911a554ec00fda36-libraryCode_source.min.js

107 ms

src=11438607;type=ukcount;cat=hpg_h0;ord=116573788807;npa=1;pscdl=denied;gtm=45fe4510v9138707320z86911419za201;gcs=G100;gcd=13q3q3q3q5;dma_cps=-;dma=0;epver=2;~oref=https%3A%2F%2Fwww.open.ac.uk%2F

src=11438607;type=ukcount;cat=hpg_h0;ord=116573788807;npa=1;pscdl=denied;gtm=45fe4510v9138707320z86911419za201;gcs=G100;gcd=13q3q3q3q5;dma_cps=-;dma=0;epver=2;~oref=https%3A%2F%2Fwww.open.ac.uk%2F

80 ms

dest5.html

dest5.html

36 ms

id

id

41 ms

ibs:dpid=411&dpuuid=ZjYntAAAAFYw3ANz

ibs:dpid=411&dpuuid=ZjYntAAAAFYw3ANz

6 ms

Accessibility Review

open.ac.uk accessibility score

100

Accessibility Issues

Best Practices

open.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

open.ac.uk SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

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

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 Open.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 Open.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.ac.uk

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