Tools & Wizards About Us
thegreatcourses.co.uk screenshot

Report Summary

  • 2

    Performance

    Renders faster than
    20% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

thegreatcourses.co.uk

Shop Courses | Plus

Page Load Speed

803 ms in total

First Response

45 ms

Resources Loaded

758 ms

Page Rendered

0 ms

thegreatcourses.co.uk screenshot

About Website

Visit thegreatcourses.co.uk now to see the best up-to-date Thegreat Courses content for France and also check out these interesting facts you probably never knew about thegreatcourses.co.uk

| The Great Courses Plus is a subscription video service with thousands of courses, documentaries & more. Start your 14-day free trial and start streaming 10,000+ videos ad-free.

Visit thegreatcourses.co.uk

Key Findings

We analyzed Thegreatcourses.co.uk page load time and found that the first response time was 45 ms and then it took 758 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

thegreatcourses.co.uk performance score

2

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value21.0 s

0/100

10%

LCP (Largest Contentful Paint)

Value56.8 s

0/100

25%

SI (Speed Index)

Value38.1 s

0/100

10%

TBT (Total Blocking Time)

Value12,700 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.6

11/100

15%

TTI (Time to Interactive)

Value63.8 s

0/100

10%

Network Requests Diagram

thegreatcourses.co.uk

45 ms

www.thegreatcourses.co.uk

331 ms

www.thegreatcourses.co.uk

186 ms

pwacompat.min.js

189 ms

jquery-3.5.1.slim.min.js

105 ms

Our browser made a total of 10 requests to load all elements on the main page. We found that 70% of them (7 requests) were addressed to the original Thegreatcourses.co.uk, 10% (1 request) were made to Use.typekit.net and 10% (1 request) were made to P.typekit.net. The less responsive or slowest element that took the longest time to load (331 ms) belongs to the original domain Thegreatcourses.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 189.3 kB (60%)

Content Size

313.0 kB

After Optimization

123.7 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Thegreatcourses.co.uk main page is 313.0 kB. 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 5% of websites need less resources to load. Javascripts take 306.1 kB which makes up the majority of the site volume.

HTML Optimization

-56%

Potential reduce by 3.8 kB

  • Original 6.9 kB
  • After minification 6.8 kB
  • After compression 3.1 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 3.8 kB or 56% of the original size.

JavaScript Optimization

-61%

Potential reduce by 185.5 kB

  • Original 306.1 kB
  • After minification 305.3 kB
  • After compression 120.6 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 185.5 kB or 61% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 5 B

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.

Requests Breakdown

Number of requests can be reduced by 3 (50%)

Requests Now

6

After Optimization

3

  • JavaScript
  • CSS

The browser has sent 6 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Thegreat Courses. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

thegreatcourses.co.uk

thegreatcourses.co.uk

45 ms

www.thegreatcourses.co.uk

www.thegreatcourses.co.uk

331 ms

www.thegreatcourses.co.uk

www.thegreatcourses.co.uk

186 ms

pwacompat.min.js

pwacompat.min.js

189 ms

jquery-3.5.1.slim.min.js

jquery-3.5.1.slim.min.js

105 ms

bowser.min.js

bowser.min.js

159 ms

cqn2wlr.css

cqn2wlr.css

55 ms

opDFg

opDFg

39 ms

p.css

p.css

31 ms

YZV5Y-K9M8B-SMAWD-2VBEZ-JCDLG

YZV5Y-K9M8B-SMAWD-2VBEZ-JCDLG

3 ms

Accessibility Review

thegreatcourses.co.uk accessibility score

80

Accessibility Issues

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

thegreatcourses.co.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

thegreatcourses.co.uk SEO score

100

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

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Thegreatcourses.co.uk can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Thegreatcourses.co.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

thegreatcourses.co.uk

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