Tools & Wizards About Us

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

cdn2.historyextra.com

BBC History Magazine, BBC History Revealed & BBC World Histories - HistoryExtra

Page Load Speed

1.5 sec in total

First Response

131 ms

Resources Loaded

897 ms

Page Rendered

471 ms

About Website

Visit cdn2.historyextra.com now to see the best up-to-date Cdn 2 History Extra content for United States and also check out these interesting facts you probably never knew about cdn2.historyextra.com

Thousands of historical articles on both British and world history for all levels of knowledge and interest.

Visit cdn2.historyextra.com

Key Findings

We analyzed Cdn2.historyextra.com page load time and found that the first response time was 131 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

cdn2.historyextra.com performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

21/100

10%

LCP (Largest Contentful Paint)

Value15.1 s

0/100

25%

SI (Speed Index)

Value24.2 s

0/100

10%

TBT (Total Blocking Time)

Value32,920 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value47.9 s

0/100

10%

Network Requests Diagram

cdn2.historyextra.com

131 ms

js

53 ms

plusone.js

72 ms

css_f2af208b0935469abb8ab021dd7cffc5.css

24 ms

css_d101f3245f94c07d6cb1640858de381b.css

31 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 30% of them (24 requests) were addressed to the original Cdn2.historyextra.com, 14% (11 requests) were made to Cdn.historyextra.com and 14% (11 requests) were made to Cdn3.historyextra.com. The less responsive or slowest element that took the longest time to load (391 ms) relates to the external source Historyextra.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 877.7 kB (43%)

Content Size

2.0 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cdn2.historyextra.com main page is 2.0 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. 70% of websites need less resources to load. Images take 887.0 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 115.4 kB

  • Original 138.4 kB
  • After minification 126.2 kB
  • After compression 23.0 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 115.4 kB or 83% of the original size.

Image Optimization

-4%

Potential reduce by 36.6 kB

  • Original 887.0 kB
  • After minification 850.4 kB

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. Cdn 2 History Extra images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 531.7 kB

  • Original 768.2 kB
  • After minification 686.2 kB
  • After compression 236.5 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 531.7 kB or 69% of the original size.

CSS Optimization

-84%

Potential reduce by 193.9 kB

  • Original 232.2 kB
  • After minification 225.4 kB
  • After compression 38.3 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. Cdn2.historyextra.com needs all CSS files to be minified and compressed as it can save up to 193.9 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 26 (34%)

Requests Now

76

After Optimization

50

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cdn 2 History Extra. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

cdn2.historyextra.com accessibility score

97

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

cdn2.historyextra.com 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

cdn2.historyextra.com 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 Cdn2.historyextra.com 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 Cdn2.historyextra.com 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 Cdn 2 History Extra. 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: