Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    82% of websites

  • 97

    SEO

    Google-friendlier than
    92% of websites

tennisracketstore.be

Ons assortiment - Coolblue - alles voor een glimlach

Page Load Speed

4.3 sec in total

First Response

367 ms

Resources Loaded

3.6 sec

Page Rendered

319 ms

tennisracketstore.be screenshot

About Website

Visit tennisracketstore.be now to see the best up-to-date Tennisracketstore content and also check out these interesting facts you probably never knew about tennisracketstore.be

Bekijk 't gehele assortiment. Voor 23.59 uur besteld? Morgen in huis. Of wanneer het jou uitkomt.

Visit tennisracketstore.be

Key Findings

We analyzed Tennisracketstore.be page load time and found that the first response time was 367 ms and then it took 3.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

tennisracketstore.be performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value12.2 s

0/100

25%

SI (Speed Index)

Value9.7 s

11/100

10%

TBT (Total Blocking Time)

Value8,050 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.531

14/100

15%

TTI (Time to Interactive)

Value13.1 s

12/100

10%

Network Requests Diagram

tennisracketstore.be

367 ms

www.coolblue.be

507 ms

analytics.js

41 ms

collect

34 ms

collect

52 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Tennisracketstore.be, 17% (10 requests) were made to Google-analytics.com and 12% (7 requests) were made to Skin.cbcdn.net. The less responsive or slowest element that took the longest time to load (837 ms) relates to the external source Image.coolblue.io.

Page Optimization Overview & Recommendations

Page size can be reduced by 399.0 kB (52%)

Content Size

769.4 kB

After Optimization

370.4 kB

In fact, the total size of Tennisracketstore.be main page is 769.4 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. 30% of websites need less resources to load. CSS take 263.5 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 155.1 kB

  • Original 192.5 kB
  • After minification 185.3 kB
  • After compression 37.4 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 155.1 kB or 81% of the original size.

Image Optimization

-2%

Potential reduce by 5.0 kB

  • Original 223.4 kB
  • After minification 218.4 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. Tennisracketstore images are well optimized though.

JavaScript Optimization

-23%

Potential reduce by 21.1 kB

  • Original 89.9 kB
  • After minification 89.9 kB
  • After compression 68.8 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 21.1 kB or 23% of the original size.

CSS Optimization

-83%

Potential reduce by 217.8 kB

  • Original 263.5 kB
  • After minification 263.4 kB
  • After compression 45.7 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. Tennisracketstore.be needs all CSS files to be minified and compressed as it can save up to 217.8 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 36 (72%)

Requests Now

50

After Optimization

14

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tennisracketstore. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

tennisracketstore.be accessibility score

90

Accessibility Issues

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

tennisracketstore.be 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

High

Missing source maps for large first-party JavaScript

SEO Factors

tennisracketstore.be SEO score

97

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

    N/A

  • Language Claimed

    NL

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tennisracketstore.be can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Dutch. Our system also found out that Tennisracketstore.be main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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