Report Summary

  • 7

    Performance

    Renders faster than
    21% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 85% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    82% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

jkarssen.nl

Zonwering kopen in Harderwijk in Ermelo? | Gratis inmeten!

Page Load Speed

4.2 sec in total

First Response

683 ms

Resources Loaded

3.3 sec

Page Rendered

219 ms

jkarssen.nl screenshot

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 683 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

jkarssen.nl performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

12/100

10%

LCP (Largest Contentful Paint)

Value14.7 s

0/100

25%

SI (Speed Index)

Value13.7 s

1/100

10%

TBT (Total Blocking Time)

Value5,370 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.301

39/100

15%

TTI (Time to Interactive)

Value23.4 s

1/100

10%

Network Requests Diagram

www.jkarssen.nl

683 ms

style.css

196 ms

gmw.css

178 ms

prettyPhoto.css

172 ms

plugins.css

176 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 88% of them (43 requests) were addressed to the original Jkarssen.nl, 8% (4 requests) were made to Garagedeurharderwijk.nl and 2% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (947 ms) relates to the external source Garagedeurharderwijk.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 373.3 kB (28%)

Content Size

1.3 MB

After Optimization

936.7 kB

In fact, the total size of Jkarssen.nl main page is 1.3 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 890.5 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 16.4 kB

  • Original 20.5 kB
  • After minification 18.5 kB
  • After compression 4.1 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 16.4 kB or 80% of the original size.

Image Optimization

-4%

Potential reduce by 39.1 kB

  • Original 890.5 kB
  • After minification 851.4 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. Jkarssen images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 188.6 kB

  • Original 251.7 kB
  • After minification 193.5 kB
  • After compression 63.1 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 188.6 kB or 75% of the original size.

CSS Optimization

-88%

Potential reduce by 129.1 kB

  • Original 147.3 kB
  • After minification 102.4 kB
  • After compression 18.2 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 needs all CSS files to be minified and compressed as it can save up to 129.1 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (34%)

Requests Now

47

After Optimization

31

The browser has sent 47 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 12 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

jkarssen.nl accessibility score

94

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

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

Links do not have a discernible name

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

High

Page has valid source maps

SEO Factors

jkarssen.nl SEO score

91

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

    EN

  • 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 does not match the claimed English 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 description is not detected on the main page of Jkarssen. 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: