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britishmuseum.org screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

britishmuseum.org

British Museum

Page Load Speed

2.9 sec in total

First Response

407 ms

Resources Loaded

2.2 sec

Page Rendered

319 ms

britishmuseum.org screenshot

About Website

Welcome to britishmuseum.org homepage info - get ready to check British Museum best content for United Kingdom right away, or after learning these important things about britishmuseum.org

Welcome to the British Museum - discover two million years of human history and culture.

Visit britishmuseum.org

Key Findings

We analyzed Britishmuseum.org page load time and found that the first response time was 407 ms and then it took 2.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

britishmuseum.org performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.3 s

18/100

10%

LCP (Largest Contentful Paint)

Value7.2 s

5/100

25%

SI (Speed Index)

Value6.1 s

45/100

10%

TBT (Total Blocking Time)

Value7,930 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value16.0 s

6/100

10%

Network Requests Diagram

www.britishmuseum.org

407 ms

WebResource.axd

171 ms

stylesheet.css

309 ms

default.css

235 ms

v2a_defaults.css

239 ms

Our browser made a total of 103 requests to load all elements on the main page. We found that 49% of them (50 requests) were addressed to the original Britishmuseum.org, 4% (4 requests) were made to Cm.g.doubleclick.net and 4% (4 requests) were made to P.rfihub.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Britishmuseum.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 662.5 kB (26%)

Content Size

2.6 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Britishmuseum.org main page is 2.6 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. 45% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 34.1 kB

  • Original 44.9 kB
  • After minification 36.7 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. This page needs HTML code to be minified as it can gain 8.1 kB, which is 18% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 34.1 kB or 76% of the original size.

Image Optimization

-4%

Potential reduce by 68.0 kB

  • Original 1.7 MB
  • After minification 1.6 MB

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. British Museum images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 401.4 kB

  • Original 612.2 kB
  • After minification 532.1 kB
  • After compression 210.8 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 401.4 kB or 66% of the original size.

CSS Optimization

-83%

Potential reduce by 159.1 kB

  • Original 190.7 kB
  • After minification 150.4 kB
  • After compression 31.6 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. Britishmuseum.org needs all CSS files to be minified and compressed as it can save up to 159.1 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 52 (57%)

Requests Now

92

After Optimization

40

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 92 CSS, Javascripts, AJAX and image requests in order to completely render the main page of British Museum. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.britishmuseum.org

www.britishmuseum.org

407 ms

WebResource.axd

WebResource.axd

171 ms

stylesheet.css

stylesheet.css

309 ms

default.css

default.css

235 ms

v2a_defaults.css

v2a_defaults.css

239 ms

slideshow.css

slideshow.css

173 ms

v2_new_homepage.css

v2_new_homepage.css

232 ms

setup.js

setup.js

244 ms

satelliteLib-596fc8a35c5f3304fa07ca27622774d9515ff798.js

satelliteLib-596fc8a35c5f3304fa07ca27622774d9515ff798.js

120 ms

jquery.cycle2.min.js

jquery.cycle2.min.js

258 ms

jquery.cycle2.swipe.min.js

jquery.cycle2.swipe.min.js

256 ms

jquery.easing.1.3.js

jquery.easing.1.3.js

256 ms

fac10929-f421-4265-91f7-38d44fb4b6b0.js

fac10929-f421-4265-91f7-38d44fb4b6b0.js

421 ms

ebOneTag.js

ebOneTag.js

77 ms

adobeAnalytics.js

adobeAnalytics.js

176 ms

jquery.min.js

jquery.min.js

36 ms

core.js

core.js

82 ms

analytics.js

analytics.js

30 ms

id

id

20 ms

bmlogo_print.png

bmlogo_print.png

88 ms

sunken_cities_624_v2.png

sunken_cities_624_v2.png

1223 ms

sicily_624.jpg

sicily_624.jpg

613 ms

tes_winner_624.jpg

tes_winner_624.jpg

538 ms

special_exhibitions_624.jpg

special_exhibitions_624.jpg

643 ms

frome_hoard_304x243.jpg

frome_hoard_304x243.jpg

175 ms

edo-mask_homepage_148x148.jpg

edo-mask_homepage_148x148.jpg

176 ms

lewis-chessman_homepage_148x148.jpg

lewis-chessman_homepage_148x148.jpg

224 ms

rosetta-stone_homepage_148x148.jpg

rosetta-stone_homepage_148x148.jpg

237 ms

double-headed-serpent-homepage_148x148.jpg

double-headed-serpent-homepage_148x148.jpg

370 ms

bm_street_view_304.jpg

bm_street_view_304.jpg

625 ms

grid3-1.jpg

grid3-1.jpg

445 ms

samsung_homepage_224x123.jpg

samsung_homepage_224x123.jpg

530 ms

grid3-2.jpg

grid3-2.jpg

605 ms

museum_of_the_citizen_logoB_304x304.gif

museum_of_the_citizen_logoB_304x304.gif

685 ms

grid3-3.jpg

grid3-3.jpg

679 ms

Services_224.jpg

Services_224.jpg

683 ms

bm_shop_224.jpg

bm_shop_224.jpg

778 ms

support_us_224.jpg

support_us_224.jpg

719 ms

2825_2989_citizen_304.jpg

2825_2989_citizen_304.jpg

752 ms

2727_2940_2727_2938_Credit-AnnaSaunders_304x171.jpg

2727_2940_2727_2938_Credit-AnnaSaunders_304x171.jpg

765 ms

2829_2993_coin_hoard.jpg

2829_2993_coin_hoard.jpg

765 ms

2831_3137_2827_304.jpg

2831_3137_2827_304.jpg

798 ms

2845_3151_beethoven_portrait_Pasternac.jpg

2845_3151_beethoven_portrait_Pasternac.jpg

826 ms

2931_3029_2931_304.jpg

2931_3029_2931_304.jpg

840 ms

headerLogo.gif

headerLogo.gif

906 ms

linkArrowsTransparent.gif

linkArrowsTransparent.gif

860 ms

spinner.gif-

spinner.gif-

23 ms

linkid.js

linkid.js

13 ms

id

id

13 ms

spinner.gif-

spinner.gif-

34 ms

bmicons.woff

bmicons.woff

825 ms

collect

collect

83 ms

linkArrows.png

linkArrows.png

822 ms

Serving

Serving

310 ms

s-code-contents-517ec04e47d4e3ae44c6eb39b6e4b95194c8ad57.js

s-code-contents-517ec04e47d4e3ae44c6eb39b6e4b95194c8ad57.js

44 ms

googleanalytics.js

googleanalytics.js

810 ms

surveyV2.js

surveyV2.js

846 ms

search.js

search.js

856 ms

headerTabIndex.js

headerTabIndex.js

865 ms

shareWidget.js

shareWidget.js

911 ms

jquery.cookie.js

jquery.cookie.js

882 ms

199 ms

zones-js.aspx

zones-js.aspx

88 ms

collect

collect

66 ms

s45467048077844

s45467048077844

17 ms

ga-audiences

ga-audiences

46 ms

tc.min.js

tc.min.js

46 ms

pixel

pixel

31 ms

ca.html

ca.html

32 ms

pixel

pixel

40 ms

pixel

pixel

34 ms

Pug

Pug

53 ms

ibs:dpid=1121&dpuuid=784541135081458127&redir=

ibs:dpid=1121&dpuuid=784541135081458127&redir=

28 ms

cx

cx

60 ms

rum

rum

91 ms

adb.gif

adb.gif

35 ms

1

1

62 ms

cs

cs

378 ms

sync

sync

43 ms

cm

cm

18 ms

js

js

57 ms

pixel.gif

pixel.gif

47 ms

cm

cm

22 ms

sd

sd

17 ms

xrefid.xgi

xrefid.xgi

13 ms

360947.gif

360947.gif

28 ms

tap.php

tap.php

23 ms

cx

cx

31 ms

cm

cm

23 ms

pixel

pixel

31 ms

30 ms

mapuid

mapuid

30 ms

20 ms

cm

cm

15 ms

xrefid.xgi

xrefid.xgi

11 ms

rum

rum

17 ms

cx

cx

19 ms

362378.gif

362378.gif

8 ms

lr.gif

lr.gif

6 ms

pixel.gif

pixel.gif

50 ms

collect

collect

19 ms

jquery.color-2.1.2.min.js

jquery.color-2.1.2.min.js

97 ms

print.css

print.css

83 ms

Accessibility Review

britishmuseum.org accessibility score

100

Accessibility Issues

Best Practices

britishmuseum.org best practices score

92

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

SEO Factors

britishmuseum.org SEO score

91

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

High

Tap targets are not sized appropriately

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 Britishmuseum.org 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 Britishmuseum.org 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

britishmuseum.org

Open Graph data is detected on the main page of British Museum. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: