5 sec in total
244 ms
3.7 sec
1.1 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 244 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
nationalgallery.org.uk performance score
name
value
score
weighting
Value3.0 s
49/100
10%
Value11.9 s
0/100
25%
Value8.0 s
21/100
10%
Value1,000 ms
27/100
30%
Value0.044
99/100
15%
Value13.7 s
10/100
10%
244 ms
655 ms
45 ms
335 ms
32 ms
Our browser made a total of 69 requests to load all elements on the main page. We found that 91% of them (63 requests) were addressed to the original Nationalgallery.org.uk, 3% (2 requests) were made to Googletagmanager.com and 1% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Nationalgallery.org.uk.
Page size can be reduced by 260.6 kB (5%)
5.0 MB
4.7 MB
In fact, the total size of Nationalgallery.org.uk main page is 5.0 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. 50% of websites need less resources to load. Images take 4.6 MB which makes up the majority of the site volume.
Potential reduce by 93.6 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 39.8 kB, which is 38% 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 93.6 kB or 89% of the original size.
Potential reduce by 77.8 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 88.6 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 88.6 kB or 31% of the original size.
Potential reduce by 683 B
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 has all CSS files already compressed.
Number of requests can be reduced by 9 (13%)
67
58
The browser has sent 67 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 5 to 1 for JavaScripts and as a result speed up the page load time.
nationalgallery.org.uk
244 ms
www.nationalgallery.org.uk
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css2
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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
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: