Tools & Wizards About Us
ethos.bl.uk screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

ethos.bl.uk

The British Library: The National Library of the UK - The British Library

Page Load Speed

3.4 sec in total

First Response

297 ms

Resources Loaded

3 sec

Page Rendered

141 ms

ethos.bl.uk screenshot

About Website

Welcome to ethos.bl.uk homepage info - get ready to check Ethos best content for United Kingdom right away, or after learning these important things about ethos.bl.uk

We are the national library of the UK

Visit ethos.bl.uk

Key Findings

We analyzed Ethos.bl.uk page load time and found that the first response time was 297 ms and then it took 3.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

ethos.bl.uk performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

13/100

10%

LCP (Largest Contentful Paint)

Value10.1 s

0/100

25%

SI (Speed Index)

Value7.2 s

29/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.0 s

27/100

10%

Network Requests Diagram

ethos.bl.uk

297 ms

Home.do;jsessionid=57829CDD4065CAFB09A0C55FFCD19B0E

104 ms

default.css

97 ms

jquery-ui-1.12.1.custom.css

190 ms

jquery-2.2.4.min.js

361 ms

Our browser made a total of 70 requests to load all elements on the main page. We found that 23% of them (16 requests) were addressed to the original Ethos.bl.uk, 16% (11 requests) were made to Platform.twitter.com and 6% (4 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (559 ms) relates to the external source Googleads.g.doubleclick.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 88.5 kB (47%)

Content Size

189.5 kB

After Optimization

101.1 kB

  • HTML
  • JavaScript

In fact, the total size of Ethos.bl.uk main page is 189.5 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. 70% of websites need less resources to load. Javascripts take 152.4 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 26.3 kB

  • Original 37.1 kB
  • After minification 33.9 kB
  • After compression 10.8 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 26.3 kB or 71% of the original size.

JavaScript Optimization

-41%

Potential reduce by 62.2 kB

  • Original 152.4 kB
  • After minification 152.4 kB
  • After compression 90.2 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 62.2 kB or 41% of the original size.

Requests Breakdown

Number of requests can be reduced by 44 (66%)

Requests Now

67

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ethos. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 34 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

ethos.bl.uk

ethos.bl.uk

297 ms

Home.do;jsessionid=57829CDD4065CAFB09A0C55FFCD19B0E

Home.do;jsessionid=57829CDD4065CAFB09A0C55FFCD19B0E

104 ms

default.css

default.css

97 ms

jquery-ui-1.12.1.custom.css

jquery-ui-1.12.1.custom.css

190 ms

jquery-2.2.4.min.js

jquery-2.2.4.min.js

361 ms

jquery-ui-1.12.1.min.js

jquery-ui-1.12.1.min.js

453 ms

media.css

media.css

272 ms

logo100.gif

logo100.gif

133 ms

ethosbanner.jpg

ethosbanner.jpg

234 ms

divideLineShort.bmp

divideLineShort.bmp

135 ms

play-bt.png

play-bt.png

132 ms

bl_res_2018.jpg

bl_res_2018.jpg

133 ms

spacer.gif

spacer.gif

233 ms

gtm.js

gtm.js

83 ms

twitter_logo.png

twitter_logo.png

227 ms

search_icon.png

search_icon.png

200 ms

widgets.js

widgets.js

161 ms

arrow.gif

arrow.gif

182 ms

conversion_async.js

conversion_async.js

102 ms

analytics.js

analytics.js

409 ms

uwt.js

uwt.js

381 ms

aquant.js

aquant.js

463 ms

iframe_api

iframe_api

460 ms

bat.js

bat.js

424 ms

hotjar-3021669.js

hotjar-3021669.js

551 ms

fbevents.js

fbevents.js

260 ms

ebOneTag.js

ebOneTag.js

457 ms

js

js

103 ms

js

js

258 ms

activityi;src=9094101;type=remark;cat=briti00;ord=4963751476794;gtm=2wg9s0;auiddc=1747711918.1664733881;~oref=https%3A%2F%2Fethos.bl.uk%2FHome.do%3Bjsessionid%3D57829CDD4065CAFB09A0C55FFCD19B0E

activityi;src=9094101;type=remark;cat=briti00;ord=4963751476794;gtm=2wg9s0;auiddc=1747711918.1664733881;~oref=https%3A%2F%2Fethos.bl.uk%2FHome.do%3Bjsessionid%3D57829CDD4065CAFB09A0C55FFCD19B0E

414 ms

widget_iframe.7dae38096d06923d683a2a807172322a.html

widget_iframe.7dae38096d06923d683a2a807172322a.html

225 ms

476 ms

559 ms

settings

settings

437 ms

674438709563137

674438709563137

174 ms

adsct

adsct

315 ms

adsct

adsct

318 ms

collect

collect

145 ms

collect

collect

165 ms

collect

collect

136 ms

src=9094101;type=remark;cat=briti00;ord=4963751476794;gtm=2wg9s0;auiddc=1747711918.1664733881;~oref=https%3A%2F%2Fethos.bl.uk%2FHome.do%3Bjsessionid%3D57829CDD4065CAFB09A0C55FFCD19B0E

src=9094101;type=remark;cat=briti00;ord=4963751476794;gtm=2wg9s0;auiddc=1747711918.1664733881;~oref=https%3A%2F%2Fethos.bl.uk%2FHome.do%3Bjsessionid%3D57829CDD4065CAFB09A0C55FFCD19B0E

196 ms

web-vitals.iife.js

web-vitals.iife.js

123 ms

5977039.js

5977039.js

179 ms

www-widgetapi.js

www-widgetapi.js

110 ms

rules-p-NC31S4jfMbbqs.js

rules-p-NC31S4jfMbbqs.js

163 ms

1073745551

1073745551

134 ms

collect

collect

200 ms

collect

collect

239 ms

197 ms

modules.61e17720cf639c3e96a7.js

modules.61e17720cf639c3e96a7.js

147 ms

collect

collect

238 ms

box-69edcc3187336f9b0a3fbb4c73be9fe6.html

box-69edcc3187336f9b0a3fbb4c73be9fe6.html

147 ms

5977039

5977039

183 ms

Serving

Serving

167 ms

164 ms

pixel;r=1263632122;rf=0;a=p-NC31S4jfMbbqs;url=https%3A%2F%2Fethos.bl.uk%2FHome.do%3Bjsessionid%3D57829CDD4065CAFB09A0C55FFCD19B0E;uht=2;fpan=1;fpa=P0-1127970786-1664733882064;pbc=;ns=0;ce=1;qjs=1;qv=39016d63-20220929161725;cm=;gdpr=0;ref=;d=bl.uk;dst=0;et=1664733882063;tzo=-180;ogl=;ses=5dca2164-1933-4174-9e9b-f832e1acedc9

pixel;r=1263632122;rf=0;a=p-NC31S4jfMbbqs;url=https%3A%2F%2Fethos.bl.uk%2FHome.do%3Bjsessionid%3D57829CDD4065CAFB09A0C55FFCD19B0E;uht=2;fpan=1;fpa=P0-1127970786-1664733882064;pbc=;ns=0;ce=1;qjs=1;qv=39016d63-20220929161725;cm=;gdpr=0;ref=;d=bl.uk;dst=0;et=1664733882063;tzo=-180;ogl=;ses=5dca2164-1933-4174-9e9b-f832e1acedc9

170 ms

horizon_timeline.a7991bb824d62c8d5038ddd875db8389.js

horizon_timeline.a7991bb824d62c8d5038ddd875db8389.js

93 ms

embeds

embeds

92 ms

clarity.js

clarity.js

33 ms

ga-audiences

ga-audiences

31 ms

EThOSBL

EThOSBL

538 ms

c.gif

c.gif

41 ms

polyfills-57d3feabe8bfd4ee389c.js

polyfills-57d3feabe8bfd4ee389c.js

26 ms

runtime-eb61dff4a84b8f906e6b.js

runtime-eb61dff4a84b8f906e6b.js

55 ms

modules.c7def0268c66f6a548ed.js

modules.c7def0268c66f6a548ed.js

116 ms

main-e9db78f5e7b3d83edd5e.js

main-e9db78f5e7b3d83edd5e.js

107 ms

_app-446fb4a338b215deec8c.js

_app-446fb4a338b215deec8c.js

107 ms

%5BscreenName%5D-c8b4c96951cf24f547b4.js

%5BscreenName%5D-c8b4c96951cf24f547b4.js

114 ms

_buildManifest.js

_buildManifest.js

116 ms

_ssgManifest.js

_ssgManifest.js

113 ms

Accessibility Review

ethos.bl.uk accessibility score

100

Accessibility Issues

Best Practices

ethos.bl.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

SEO Factors

ethos.bl.uk SEO score

93

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ethos.bl.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Ethos.bl.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

ethos.bl.uk

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