Tools & Wizards About Us
decathlon.uk screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    38% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    57% of websites

  • 96

    SEO

    Google-friendlier than
    91% of websites

decathlon.uk

Decathlon | Sports Shoes, Sports Gear & Sports Equipment

Page Load Speed

1.8 sec in total

First Response

13 ms

Resources Loaded

1.3 sec

Page Rendered

518 ms

decathlon.uk screenshot

About Website

Visit decathlon.uk now to see the best up-to-date Decathlon content and also check out these interesting facts you probably never knew about decathlon.uk

Shop 70+ sports in-store & online, free shipping on select in-app purchases. Free click & collect. 2-year Decathlon product warranty. Members 365-day returns.

Visit decathlon.uk

Key Findings

We analyzed Decathlon.uk page load time and found that the first response time was 13 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

decathlon.uk performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value8.9 s

15/100

10%

TBT (Total Blocking Time)

Value4,050 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value23.1 s

1/100

10%

Network Requests Diagram

decathlon.uk

13 ms

www.decathlon.co.uk

323 ms

api_dynamic.js

402 ms

api_static.js

442 ms

vtmn-tailwind.74d102ef5e24ceaa6747.css

5 ms

Our browser made a total of 17 requests to load all elements on the main page. We found that 6% of them (1 request) were addressed to the original Decathlon.uk, 53% (9 requests) were made to Decathlon.co.uk and 24% (4 requests) were made to Contents.mediadecathlon.com. The less responsive or slowest element that took the longest time to load (442 ms) relates to the external source Cdn-eu.dynamicyield.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 235.1 kB (69%)

Content Size

342.7 kB

After Optimization

107.7 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Decathlon.uk main page is 342.7 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. 45% of websites need less resources to load. HTML takes 274.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 222.6 kB

  • Original 274.2 kB
  • After minification 270.8 kB
  • After compression 51.6 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. 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 222.6 kB or 81% of the original size.

JavaScript Optimization

-0%

Potential reduce by 20 B

  • Original 21.3 kB
  • After minification 21.3 kB
  • After compression 21.3 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. This website has mostly compressed JavaScripts.

CSS Optimization

-26%

Potential reduce by 12.5 kB

  • Original 47.2 kB
  • After minification 47.2 kB
  • After compression 34.8 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. Decathlon.uk needs all CSS files to be minified and compressed as it can save up to 12.5 kB or 26% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (36%)

Requests Now

11

After Optimization

7

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Decathlon. 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.

Network Requests Diagram

decathlon.uk

decathlon.uk

13 ms

www.decathlon.co.uk

www.decathlon.co.uk

323 ms

api_dynamic.js

api_dynamic.js

402 ms

api_static.js

api_static.js

442 ms

vtmn-tailwind.74d102ef5e24ceaa6747.css

vtmn-tailwind.74d102ef5e24ceaa6747.css

5 ms

vtmn-style.83425ee4c35b26f89a6e.css

vtmn-style.83425ee4c35b26f89a6e.css

27 ms

style.12fa42fe1158a846a521.css

style.12fa42fe1158a846a521.css

12 ms

_Incapsula_Resource

_Incapsula_Resource

17 ms

easter%20hp%20slider%20desktop%202180x1378%20v1%20%20%20wet%20weather.png

easter%20hp%20slider%20desktop%202180x1378%20v1%20%20%20wet%20weather.png

172 ms

icons.gb.152ffa5594086031c6ed.svg

icons.gb.152ffa5594086031c6ed.svg

150 ms

icons.e59f6439908daa53a821.svg

icons.e59f6439908daa53a821.svg

152 ms

app%20store%20badge.png

app%20store%20badge.png

111 ms

google%20play%20badge.png

google%20play%20badge.png

110 ms

Lemonway%20grey.png

Lemonway%20grey.png

111 ms

st

st

221 ms

client.38dd37d517b3f86b0dbe.js

client.38dd37d517b3f86b0dbe.js

90 ms

_Incapsula_Resource

_Incapsula_Resource

9 ms

Accessibility Review

decathlon.uk accessibility score

87

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

decathlon.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

High

Page has valid source maps

SEO Factors

decathlon.uk SEO score

96

Search Engine Optimization Advices

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 Decathlon.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 Decathlon.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

decathlon.uk

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