Access kerklau.nl. Kerklau Shop Supplies

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value16.8 s

0/100

25%

SI (Speed Index)

Value5.7 s

52/100

10%

TBT (Total Blocking Time)

Value130 ms

96/100

30%

CLS (Cumulative Layout Shift)

Value0.221

56/100

15%

TTI (Time to Interactive)

Value13.1 s

12/100

10%

www.kerklau.nl

1352 ms

cbae5ceb337f8be28a84959099f1f61a.css

515 ms

prototype.js

511 ms

ccard.js

173 ms

validation.js

341 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 82% of them (63 requests) were addressed to the original Kerklau.nl, 5% (4 requests) were made to Kiyoh.nl and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Kerklau.nl.

Content Size

1.4 MB

After Optimization

555.0 kB

In fact, the total size of Kerklau.nl main page is 1.4 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. 45% of websites need less resources to load. Javascripts take 703.7 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 156.9 kB

Original 173.0 kB
After minification 149.5 kB
After compression 16.2 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. This page needs HTML code to be minified as it can gain 23.5 kB, which is 14% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 156.9 kB or 91% of the original size.

Image Optimization

-18%

Potential reduce by 70.7 kB

Original 395.4 kB
After minification 324.7 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, Kerklau needs image optimization as it can save up to 70.7 kB or 18% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 513.5 kB

Original 703.7 kB
After minification 567.9 kB
After compression 190.2 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 513.5 kB or 73% of the original size.

CSS Optimization

-86%

Potential reduce by 143.4 kB

Original 167.4 kB
After minification 121.0 kB
After compression 24.0 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. Kerklau.nl needs all CSS files to be minified and compressed as it can save up to 143.4 kB or 86% of the original size.

Requests Now

After Optimization

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kerklau. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

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

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.

High

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

These items highlight common accessibility best practices.

High

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

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

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/).

High

Document uses legible font sizes

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 Kerklau.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 Kerklau.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

kerklau.nl

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Kerklau Shop Supplies - Kerklau Shop Supplies

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

www.kerklau.nl

cbae5ceb337f8be28a84959099f1f61a.css

prototype.js

ccard.js

validation.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

www.kerklau.nl

cbae5ceb337f8be28a84959099f1f61a.css

prototype.js

ccard.js

validation.js

builder.js

effects.js

dragdrop.js

controls.js

slider.js

js.js

form.js

menu.js

translate.js

cookies.js

scriptaculous.js

jquery-1.10.2.min.js

protoshow.js

jquery-1.7.2.min.js

respond.min.js

select-menu.js

jquery.flexslider.js

ddaccordion.js

accordion.js

css

conversion.js

mh_styles.css

sound.js

analytics.js

loading2.gif

bg_header.png

nl.png

de.png

logo_kerklau.png

tel_nr.gif

mail_icon.gif

twitter_icon.png

search_btn.png

kerklau-banner1.jpg

kerklau-banner2.jpg

kerklau-banner3.jpg

i_asc_arrow.gif

C4005020.jpg

$$stringtable_lang_nl.js