Access nationalgallery.co.uk. Art Gift Shop Online

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

20/100

10%

LCP (Largest Contentful Paint)

Value15.3 s

0/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value3,890 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value23.1 s

1/100

10%

nationalgallery.co.uk

320 ms

shop.nationalgallery.org.uk

32 ms

calendar.css

9 ms

styles-m.css

14 ms

quickview.css

40 ms

Our browser made a total of 209 requests to load all elements on the main page. We found that 0% of them (1 request) were addressed to the original Nationalgallery.co.uk, 95% (198 requests) were made to Shop.nationalgallery.org.uk and 1% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (969 ms) relates to the external source Shop.nationalgallery.org.uk.

Content Size

2.2 MB

After Optimization

1.5 MB

In fact, the total size of Nationalgallery.co.uk main page is 2.2 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. 80% 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 932.7 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 508.8 kB

Original 570.7 kB
After minification 478.8 kB
After compression 61.9 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. This page needs HTML code to be minified as it can gain 91.9 kB, which is 16% 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 508.8 kB or 89% of the original size.

Image Optimization

-0%

Potential reduce by 129 B

Original 932.7 kB
After minification 932.6 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.

JavaScript Optimization

-32%

Potential reduce by 170.5 kB

Original 537.0 kB
After minification 480.6 kB
After compression 366.4 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 170.5 kB or 32% of the original size.

CSS Optimization

-10%

Potential reduce by 13.9 kB

Original 142.6 kB
After minification 142.3 kB
After compression 128.7 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.co.uk has all CSS files already compressed.

Requests Now

200

After Optimization

The browser has sent 200 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 121 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.