Tools & Wizards About Us

Report Summary

  • 22

    Performance

    Renders faster than
    40% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

jkarssen.nl

Zonwering kopen in Harderwijk in Ermelo? | Gratis inmeten!

Page Load Speed

5.5 sec in total

First Response

363 ms

Resources Loaded

4.8 sec

Page Rendered

361 ms

About Website

Click here to check amazing Jkarssen content. Otherwise, check out these important facts you probably never knew about jkarssen.nl

Bij Jan Karssen Zonwering en garagedeuren in Harderwijk vindt u screens, rolluiken, uitvalschermen, knikarmschermen en garagedeuren op maat.

Visit jkarssen.nl

Key Findings

We analyzed Jkarssen.nl page load time and found that the first response time was 363 ms and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

jkarssen.nl performance score

22

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value21.7 s

0/100

25%

SI (Speed Index)

Value12.5 s

3/100

10%

TBT (Total Blocking Time)

Value1,450 ms

15/100

30%

CLS (Cumulative Layout Shift)

Value0.022

100/100

15%

TTI (Time to Interactive)

Value20.0 s

2/100

10%

Network Requests Diagram

jkarssen.nl

363 ms

www.jkarssen.nl

964 ms

wp-emoji-release.min.js

98 ms

sbi-styles.min.css

216 ms

7bf9e847570ea390a886bbd5dc4e6a61.min.css

637 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 90% of them (26 requests) were addressed to the original Jkarssen.nl, 7% (2 requests) were made to Googletagmanager.com and 3% (1 request) were made to Google.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Jkarssen.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 105.5 kB (2%)

Content Size

5.6 MB

After Optimization

5.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jkarssen.nl main page is 5.6 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. 40% of websites need less resources to load. Images take 5.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 71.4 kB

  • Original 86.5 kB
  • After minification 85.0 kB
  • After compression 15.0 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 71.4 kB or 83% of the original size.

Image Optimization

-1%

Potential reduce by 32.5 kB

  • Original 5.1 MB
  • After minification 5.1 MB

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. Jkarssen images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 125 B

  • Original 193.6 kB
  • After minification 193.6 kB
  • After compression 193.5 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

-1%

Potential reduce by 1.5 kB

  • Original 227.0 kB
  • After minification 227.0 kB
  • After compression 225.5 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. Jkarssen.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 15 (63%)

Requests Now

24

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jkarssen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

jkarssen.nl accessibility score

96

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

jkarssen.nl 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

SEO Factors

jkarssen.nl SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jkarssen.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Jkarssen.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 data is detected on the main page of Jkarssen. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: