Report Summary

  • 64

    Performance

    Renders faster than
    78% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

kersten-trading.nl

kersten-trading.nl - Kersten Trading Netherlands B.V.

Page Load Speed

3.8 sec in total

First Response

1.1 sec

Resources Loaded

2.6 sec

Page Rendered

142 ms

kersten-trading.nl screenshot

About Website

Welcome to kersten-trading.nl homepage info - get ready to check Kersten Trading best content right away, or after learning these important things about kersten-trading.nl

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Key Findings

We analyzed Kersten-trading.nl page load time and found that the first response time was 1.1 sec and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

kersten-trading.nl performance score

64

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value4.6 s

35/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.149

76/100

15%

TTI (Time to Interactive)

Value4.6 s

81/100

10%

Network Requests Diagram

1051 ms

jquery.js

272 ms

jquery.noconflict.js

167 ms

bootstrap.min.css

254 ms

bootstrap-responsive.min.css

175 ms

Our browser made a total of 25 requests to load all elements on the main page. We found that 84% of them (21 requests) were addressed to the original Kersten-trading.nl, 12% (3 requests) were made to Fonts.gstatic.com and 4% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Kersten-trading.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 311.0 kB (50%)

Content Size

617.4 kB

After Optimization

306.4 kB

In fact, the total size of Kersten-trading.nl main page is 617.4 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. Images take 253.7 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 5.5 kB

  • Original 7.8 kB
  • After minification 7.1 kB
  • After compression 2.3 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 5.5 kB or 70% of the original size.

Image Optimization

-12%

Potential reduce by 30.1 kB

  • Original 253.7 kB
  • After minification 223.6 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. Obviously, Kersten Trading needs image optimization as it can save up to 30.1 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-67%

Potential reduce by 102.1 kB

  • Original 152.2 kB
  • After minification 149.0 kB
  • After compression 50.2 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 102.1 kB or 67% of the original size.

CSS Optimization

-85%

Potential reduce by 173.3 kB

  • Original 203.6 kB
  • After minification 188.9 kB
  • After compression 30.3 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. Kersten-trading.nl needs all CSS files to be minified and compressed as it can save up to 173.3 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (76%)

Requests Now

21

After Optimization

5

The browser has sent 21 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kersten Trading. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

kersten-trading.nl accessibility score

70

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

kersten-trading.nl best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

kersten-trading.nl SEO score

81

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kersten-trading.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Kersten-trading.nl 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

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