Report Summary

  • 59

    Performance

    Renders faster than
    74% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

youtube.co.uk

YouTube

Page Load Speed

778 ms in total

First Response

117 ms

Resources Loaded

529 ms

Page Rendered

132 ms

youtube.co.uk screenshot

About Website

Click here to check amazing You Tube content for United Kingdom. Otherwise, check out these important facts you probably never knew about youtube.co.uk

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

Visit youtube.co.uk

Key Findings

We analyzed Youtube.co.uk page load time and found that the first response time was 117 ms and then it took 661 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

youtube.co.uk performance score

59

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.8 s

4/100

10%

LCP (Largest Contentful Paint)

Value6.5 s

8/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value5.8 s

67/100

10%

Network Requests Diagram

www.youtube.com

117 ms

web-animations-next-lite.min.js

18 ms

webcomponents-all-noPatch.js

25 ms

fetch-polyfill.js

15 ms

intersection-observer.min.js

15 ms

Our browser made a total of 17 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Youtube.co.uk, 12% (2 requests) were made to Accounts.google.com and 6% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (155 ms) relates to the external source Youtube.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 525.2 kB (73%)

Content Size

724.3 kB

After Optimization

199.1 kB

In fact, the total size of Youtube.co.uk main page is 724.3 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. 30% of websites need less resources to load. HTML takes 495.4 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 364.8 kB

  • Original 495.4 kB
  • After minification 495.4 kB
  • After compression 130.6 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 364.8 kB or 74% of the original size.

JavaScript Optimization

-70%

Potential reduce by 149.9 kB

  • Original 215.4 kB
  • After minification 214.4 kB
  • After compression 65.4 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 149.9 kB or 70% of the original size.

CSS Optimization

-77%

Potential reduce by 10.5 kB

  • Original 13.6 kB
  • After minification 13.5 kB
  • After compression 3.1 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. Youtube.co.uk needs all CSS files to be minified and compressed as it can save up to 10.5 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (85%)

Requests Now

13

After Optimization

2

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of You Tube. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

youtube.co.uk accessibility score

89

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

youtube.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

Missing source maps for large first-party JavaScript

SEO Factors

youtube.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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Youtube.co.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 Youtube.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

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