Tools & Wizards About Us

Report Summary

  • 43

    Performance

    Renders faster than
    62% of other websites

  • 73

    Accessibility

    Visual factors better than
    that of 38% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

cbbc.co.uk

The Official Home of CBBC - CBBC - BBC

Page Load Speed

1.7 sec in total

First Response

421 ms

Resources Loaded

1.2 sec

Page Rendered

1 ms

About Website

Visit cbbc.co.uk now to see the best up-to-date CBBC content and also check out these interesting facts you probably never knew about cbbc.co.uk

Welcome to CBBC. Here you can play free online kids games, watch your favourite shows, chat with celebrities and join in with the fun.

Visit cbbc.co.uk

Key Findings

We analyzed Cbbc.co.uk page load time and found that the first response time was 421 ms and then it took 1.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

cbbc.co.uk performance score

43

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value9.9 s

0/100

25%

SI (Speed Index)

Value3.7 s

85/100

10%

TBT (Total Blocking Time)

Value590 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

cbbc

421 ms

core.css

139 ms

cbbc-rebrand.min.css

110 ms

home.css

153 ms

orb.min.css

142 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Cbbc.co.uk, 16% (3 requests) were made to Bbc.co.uk and 16% (3 requests) were made to A.files.bbci.co.uk. The less responsive or slowest element that took the longest time to load (421 ms) relates to the external source Bbc.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 566.7 kB (76%)

Content Size

747.9 kB

After Optimization

181.2 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Cbbc.co.uk main page is 747.9 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. 35% of websites need less resources to load. Javascripts take 418.8 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 20.8 kB

  • Original 29.4 kB
  • After minification 29.1 kB
  • After compression 8.6 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 20.8 kB or 71% of the original size.

JavaScript Optimization

-68%

Potential reduce by 283.1 kB

  • Original 418.8 kB
  • After minification 416.9 kB
  • After compression 135.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 283.1 kB or 68% of the original size.

CSS Optimization

-88%

Potential reduce by 262.8 kB

  • Original 299.7 kB
  • After minification 297.0 kB
  • After compression 36.9 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. Cbbc.co.uk needs all CSS files to be minified and compressed as it can save up to 262.8 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (83%)

Requests Now

18

After Optimization

3

  • AJAX
  • JavaScript
  • CSS

The browser has sent 18 CSS, Javascripts, AJAX and image requests in order to completely render the main page of CBBC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

cbbc.co.uk accessibility score

73

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

cbbc.co.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

Missing source maps for large first-party JavaScript

SEO Factors

cbbc.co.uk SEO score

83

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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 Cbbc.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 Cbbc.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 CBBC. 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: