28.8 sec in total
310 ms
18.2 sec
10.3 sec
Welcome to nationalgallery.org.uk homepage info - get ready to check National Gallery best content for United Kingdom right away, or after learning these important things about nationalgallery.org.uk
The Nation's Gallery. The story of European art, masterpiece by masterpiece.
Visit nationalgallery.org.ukWe analyzed Nationalgallery.org.uk page load time and found that the first response time was 310 ms and then it took 28.5 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.
nationalgallery.org.uk performance score
name
value
score
weighting
Value5.0 s
10/100
10%
Value9.2 s
1/100
25%
Value5.6 s
52/100
10%
Value700 ms
43/100
30%
Value0.003
100/100
15%
Value9.3 s
31/100
10%
310 ms
608 ms
638 ms
190 ms
1038 ms
Our browser made a total of 50 requests to load all elements on the main page. We found that 58% of them (29 requests) were addressed to the original Nationalgallery.org.uk, 8% (4 requests) were made to Google-analytics.com and 6% (3 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (5.6 sec) relates to the external source Facebook.com.
Page size can be reduced by 2.8 MB (40%)
7.0 MB
4.2 MB
In fact, the total size of Nationalgallery.org.uk main page is 7.0 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.2 MB which makes up the majority of the site volume.
Potential reduce by 114.9 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 114.9 kB or 77% of the original size.
Potential reduce by 66.5 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. National Gallery images are well optimized though.
Potential reduce by 2.2 MB
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 2.2 MB or 70% of the original size.
Potential reduce by 403.0 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. Nationalgallery.org.uk needs all CSS files to be minified and compressed as it can save up to 403.0 kB or 81% of the original size.
Number of requests can be reduced by 18 (40%)
45
27
The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of National Gallery. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.
nationalgallery.org.uk
310 ms
www.nationalgallery.org.uk
608 ms
jquery.min.js
638 ms
DependencyHandler.axd
190 ms
DependencyHandler.axd
1038 ms
addthis_widget.js
981 ms
gtm.js
177 ms
DependencyHandler.axd
477 ms
ng-logo-white.png
838 ms
search-button.gif
592 ms
facebook-30.jpg
592 ms
twitter-30.jpg
592 ms
youtube-30.jpg
569 ms
google-plus-30.jpg
569 ms
instagram-30-final.jpg
806 ms
n-6668-bellotto-press-whatsnew-115x83.png
839 ms
webslider_rimini-copy.jpg
1593 ms
sunflowers-banner-2.jpg
821 ms
ng4451-homepage-v3.png
3109 ms
n-6301-650x302.jpg
1300 ms
xmas-whatson-big-v1.png
1574 ms
hub-trafalgar-square-panoramic_big.png
1624 ms
flags-big.png
1542 ms
analytics.js
523 ms
_dmptv2.js
1058 ms
iframe_api
761 ms
fbevents.js
1033 ms
home-top.png
576 ms
cs-logo-127-black-2.png
559 ms
link-arrow-14.gif
549 ms
link-arrow-13.gif
549 ms
glyphicons-halflings-regular.woff
496 ms
linkid.js
755 ms
www-widgetapi.js
164 ms
962518137138004
94 ms
link-arrows.png
1415 ms
DependencyHandler.axd
1292 ms
collect
1020 ms
collect
5473 ms
5598 ms
collect
4656 ms
cookie-message.html
2788 ms
_ate.track.config_resp
1412 ms
300lo.json
1146 ms
collect
806 ms
ajax-loader.gif
890 ms
ActivityServer.bs
1613 ms
ga-audiences
511 ms
sh.886bb8b2fb82aeab6a228151.html
1415 ms
layers.7569eb2b5e9fff3d8477.js
1261 ms
nationalgallery.org.uk accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
nationalgallery.org.uk best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Missing source maps for large first-party JavaScript
nationalgallery.org.uk SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
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
Document uses legible font sizes
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nationalgallery.org.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 Nationalgallery.org.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.
nationalgallery.org.uk
Open Graph description is not detected on the main page of National Gallery. 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: