Tools & Wizards About Us
cdn3.historyextra.com screenshot

Report Summary

  • 24

    Performance

    Renders faster than
    43% 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

cdn3.historyextra.com

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

Page Load Speed

2.3 sec in total

First Response

697 ms

Resources Loaded

1.3 sec

Page Rendered

293 ms

cdn3.historyextra.com screenshot

About Website

Welcome to cdn3.historyextra.com homepage info - get ready to check Cdn 3 History Extra best content for United States right away, or after learning these important things about cdn3.historyextra.com

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

Visit cdn3.historyextra.com

Key Findings

We analyzed Cdn3.historyextra.com page load time and found that the first response time was 697 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

cdn3.historyextra.com performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

75/100

10%

LCP (Largest Contentful Paint)

Value9.8 s

0/100

25%

SI (Speed Index)

Value9.7 s

10/100

10%

TBT (Total Blocking Time)

Value3,330 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.034

100/100

15%

TTI (Time to Interactive)

Value20.7 s

2/100

10%

Network Requests Diagram

cdn3.historyextra.com

697 ms

js

29 ms

plusone.js

85 ms

css_f2af208b0935469abb8ab021dd7cffc5.css

50 ms

css_d101f3245f94c07d6cb1640858de381b.css

51 ms

Our browser made a total of 76 requests to load all elements on the main page. We found that 20% of them (15 requests) were addressed to the original Cdn3.historyextra.com, 26% (20 requests) were made to Cdn2.historyextra.com and 14% (11 requests) were made to Cdn.historyextra.com. The less responsive or slowest element that took the longest time to load (697 ms) belongs to the original domain Cdn3.historyextra.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 871.8 kB (43%)

Content Size

2.0 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cdn3.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 888.9 kB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 113.8 kB

  • Original 136.2 kB
  • After minification 124.0 kB
  • After compression 22.4 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 113.8 kB or 84% of the original size.

Image Optimization

-4%

Potential reduce by 36.6 kB

  • Original 888.9 kB
  • After minification 852.2 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 3 History Extra images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 527.4 kB

  • Original 763.9 kB
  • After minification 681.9 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 527.4 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. Cdn3.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 25 (35%)

Requests Now

72

After Optimization

47

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 72 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cdn 3 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 21 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cdn3.historyextra.com

cdn3.historyextra.com

697 ms

js

js

29 ms

plusone.js

plusone.js

85 ms

css_f2af208b0935469abb8ab021dd7cffc5.css

css_f2af208b0935469abb8ab021dd7cffc5.css

50 ms

css_d101f3245f94c07d6cb1640858de381b.css

css_d101f3245f94c07d6cb1640858de381b.css

51 ms

js_0d0112321713ea4d47ca07fccdc96009.js

js_0d0112321713ea4d47ca07fccdc96009.js

49 ms

css

css

64 ms

widgets.js

widgets.js

8 ms

js_3929119b05c34f154fe95ac931c984bd.js

js_3929119b05c34f154fe95ac931c984bd.js

5 ms

conversion.js

conversion.js

96 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

214 ms

controltag

controltag

216 ms

gpt.js

gpt.js

183 ms

sdk.js

sdk.js

230 ms

analytics.js

analytics.js

182 ms

beacon.js

beacon.js

181 ms

fbds.js

fbds.js

265 ms

j.php

j.php

180 ms

magnify.png

magnify.png

176 ms

topbarPodcast.png

topbarPodcast.png

412 ms

bbc-hist-logo.png

bbc-hist-logo.png

395 ms

10567007-high_res-art-of-scandinavia%202.jpg

10567007-high_res-art-of-scandinavia%202.jpg

173 ms

628784ce-7847-4136-b538-32ceee53dae7.js

628784ce-7847-4136-b538-32ceee53dae7.js

158 ms

histextlogo.png

histextlogo.png

159 ms

arrow-down.png

arrow-down.png

158 ms

A3X1HKindustrialheros.jpg

A3X1HKindustrialheros.jpg

159 ms

1x1-trans-black-50percent.png

1x1-trans-black-50percent.png

159 ms

43190HENRYVIII_ik%202.jpg

43190HENRYVIII_ik%202.jpg

187 ms

10583965-low_res-inside-obamas-white-house.jpg

10583965-low_res-inside-obamas-white-house.jpg

159 ms

pencil.jpg

pencil.jpg

159 ms

John%20Palmer_kindle.jpg

John%20Palmer_kindle.jpg

159 ms

Anne%201.jpg

Anne%201.jpg

184 ms

Salem%20Web.jpg

Salem%20Web.jpg

197 ms

On%20sale_8.jpg

On%20sale_8.jpg

191 ms

Jane%20Austen%20portrait%202.jpg

Jane%20Austen%20portrait%202.jpg

187 ms

Coronation.jpg

Coronation.jpg

194 ms

twitter-bird.png

twitter-bird.png

188 ms

pop-recent-tail.png

pop-recent-tail.png

187 ms

Screen%20Shot%202015-07-31%20at%2010.38.20.png

Screen%20Shot%202015-07-31%20at%2010.38.20.png

193 ms

immediate-footer-logo-white.png

immediate-footer-logo-white.png

192 ms

dreamstime_8758515_traffic.jpg

dreamstime_8758515_traffic.jpg

154 ms

8290411-high_res-incarnations-india-in-50-lives%203.jpg

8290411-high_res-incarnations-india-in-50-lives%203.jpg

182 ms

Sopwith%202.jpg

Sopwith%202.jpg

184 ms

GettyImages-566428835%203.jpg

GettyImages-566428835%203.jpg

184 ms

10567007-high_res-art-of-scandinavia%202.jpg

10567007-high_res-art-of-scandinavia%202.jpg

194 ms

Strike.jpg

Strike.jpg

189 ms

Screen%20Shot%202015-04-22%20at%2012.11.34.png

Screen%20Shot%202015-04-22%20at%2012.11.34.png

184 ms

WT-image_0.jpg

WT-image_0.jpg

188 ms

8290411-high_res-incarnations-india-in-50-lives%202.jpg

8290411-high_res-incarnations-india-in-50-lives%202.jpg

186 ms

hist-rev-logo.png

hist-rev-logo.png

229 ms

GettyImages-51244534%202.jpg

GettyImages-51244534%202.jpg

180 ms

GettyImages-51244534%203.jpg

GettyImages-51244534%203.jpg

190 ms

Rabbit%20Woman.jpg

Rabbit%20Woman.jpg

189 ms

festival%20image%202.jpg

festival%20image%202.jpg

184 ms

podcast.gif

podcast.gif

227 ms

Stonehenge.jpg

Stonehenge.jpg

189 ms

10009023-high_res-digging-for-britain%202.jpg

10009023-high_res-digging-for-britain%202.jpg

200 ms

Baker%20and%20children_0.jpg

Baker%20and%20children_0.jpg

224 ms

podcast-logo_v4.jpeg

podcast-logo_v4.jpeg

198 ms

GettyImages-566428835%202.jpg

GettyImages-566428835%202.jpg

225 ms

226 ms

f0fe9375-062e-40e7-b2be-b37b2f6b848f.js

f0fe9375-062e-40e7-b2be-b37b2f6b848f.js

174 ms

webfont.js

webfont.js

214 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

79 ms

collect

collect

68 ms

pubads_impl_82.js

pubads_impl_82.js

64 ms

v.gif

v.gif

61 ms

jquery.min.js

jquery.min.js

63 ms

controltag.js.f8e94fa978cc2569e4b4423df4245d7e

controltag.js.f8e94fa978cc2569e4b4423df4245d7e

63 ms

collect

collect

56 ms

collect

collect

187 ms

146 ms

224 ms

tgy7oqe.js

tgy7oqe.js

233 ms

container.html

container.html

61 ms

122 ms

Accessibility Review

cdn3.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

cdn3.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

cdn3.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 Cdn3.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 Cdn3.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

cdn3.historyextra.com

Open Graph description is not detected on the main page of Cdn 3 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: