Tools & Wizards About Us
kalsbeek.nl screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 60% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

kalsbeek.nl

Kalsbeek College - vmbo - havo - atheneum - gymnasium

Page Load Speed

5 sec in total

First Response

213 ms

Resources Loaded

4.2 sec

Page Rendered

535 ms

kalsbeek.nl screenshot

About Website

Click here to check amazing Kalsbeek content for Netherlands. Otherwise, check out these important facts you probably never knew about kalsbeek.nl

Het Kalsbeek College in Woerden. Opleidingen: vmbo, havo, atheneum en gymnasium. Verdeeld over de locaties Bredius en Schilderspark.

Visit kalsbeek.nl

Key Findings

We analyzed Kalsbeek.nl page load time and found that the first response time was 213 ms and then it took 4.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

kalsbeek.nl performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

16/100

10%

LCP (Largest Contentful Paint)

Value9.9 s

0/100

25%

SI (Speed Index)

Value7.8 s

23/100

10%

TBT (Total Blocking Time)

Value2,320 ms

5/100

30%

CLS (Cumulative Layout Shift)

Value0.019

100/100

15%

TTI (Time to Interactive)

Value10.1 s

26/100

10%

Network Requests Diagram

kalsbeek.nl

213 ms

www.kalsbeek.nl

965 ms

style.css

498 ms

jquery-1.11.1.min.js

465 ms

jquery.ui.min.js

21 ms

Our browser made a total of 50 requests to load all elements on the main page. We found that 84% of them (42 requests) were addressed to the original Kalsbeek.nl, 10% (5 requests) were made to Fonts.gstatic.com and 4% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Kalsbeek.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 808.7 kB (14%)

Content Size

5.6 MB

After Optimization

4.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kalsbeek.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 4.7 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 51.1 kB

  • Original 59.9 kB
  • After minification 55.2 kB
  • After compression 8.8 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 51.1 kB or 85% of the original size.

Image Optimization

-2%

Potential reduce by 95.7 kB

  • Original 4.7 MB
  • After minification 4.6 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. Kalsbeek images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 469.7 kB

  • Original 672.0 kB
  • After minification 668.8 kB
  • After compression 202.3 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 469.7 kB or 70% of the original size.

CSS Optimization

-90%

Potential reduce by 192.3 kB

  • Original 214.4 kB
  • After minification 160.0 kB
  • After compression 22.1 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. Kalsbeek.nl needs all CSS files to be minified and compressed as it can save up to 192.3 kB or 90% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (23%)

Requests Now

43

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Kalsbeek. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

kalsbeek.nl

kalsbeek.nl

213 ms

www.kalsbeek.nl

www.kalsbeek.nl

965 ms

style.css

style.css

498 ms

jquery-1.11.1.min.js

jquery-1.11.1.min.js

465 ms

jquery.ui.min.js

jquery.ui.min.js

21 ms

plugins.min.js

plugins.min.js

27 ms

main.min.js

main.min.js

22 ms

wp-embed.min.js

wp-embed.min.js

408 ms

jquery.json.js

jquery.json.js

33 ms

gravityforms.min.js

gravityforms.min.js

38 ms

conditional_logic.min.js

conditional_logic.min.js

396 ms

chosen.jquery.min.js

chosen.jquery.min.js

36 ms

css

css

58 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

40 ms

ga.js

ga.js

80 ms

logo.png

logo.png

36 ms

logo-text.png

logo-text.png

27 ms

arrow-submenu.png

arrow-submenu.png

28 ms

icon-search.png

icon-search.png

28 ms

menu-mobile.png

menu-mobile.png

26 ms

icon-video.png

icon-video.png

375 ms

arrow-blue.png

arrow-blue.png

453 ms

arrow-red.png

arrow-red.png

371 ms

arrow-green.png

arrow-green.png

352 ms

arrow-right.png

arrow-right.png

389 ms

arrow-white.png

arrow-white.png

388 ms

arrow-white-big.png

arrow-white-big.png

729 ms

arrow-left.png

arrow-left.png

374 ms

bredius.png

bredius.png

1097 ms

schilderspark.png

schilderspark.png

1071 ms

UAnF6lSK1JNc1tqTiG8pNALUuEpTyoUstqEm5AMlJo4.ttf

UAnF6lSK1JNc1tqTiG8pNALUuEpTyoUstqEm5AMlJo4.ttf

300 ms

xkvoNo9fC8O2RDydKj12b8DdSZkkecOE1hvV7ZHvhyU.ttf

xkvoNo9fC8O2RDydKj12b8DdSZkkecOE1hvV7ZHvhyU.ttf

301 ms

JbtMzqLaYbbbCL9X6EvaI8DdSZkkecOE1hvV7ZHvhyU.ttf

JbtMzqLaYbbbCL9X6EvaI8DdSZkkecOE1hvV7ZHvhyU.ttf

316 ms

1ImRNPx4870-D9a1EBUdPMDdSZkkecOE1hvV7ZHvhyU.ttf

1ImRNPx4870-D9a1EBUdPMDdSZkkecOE1hvV7ZHvhyU.ttf

336 ms

PKCRbVvRfd5n7BTjtGiFZMDdSZkkecOE1hvV7ZHvhyU.ttf

PKCRbVvRfd5n7BTjtGiFZMDdSZkkecOE1hvV7ZHvhyU.ttf

328 ms

icon-top.png

icon-top.png

366 ms

__utm.gif

__utm.gif

231 ms

admin-ajax.php

admin-ajax.php

1571 ms

Homepage-nieuw-2015-2016.png

Homepage-nieuw-2015-2016.png

961 ms

P1120107-800x800.jpg

P1120107-800x800.jpg

87 ms

IMG_5506-1-800x747.jpg

IMG_5506-1-800x747.jpg

97 ms

politie-800x755.jpg

politie-800x755.jpg

796 ms

P1120107-400x400.jpg

P1120107-400x400.jpg

619 ms

IMG_5506-1-400x400.jpg

IMG_5506-1-400x400.jpg

428 ms

politie-400x400.jpg

politie-400x400.jpg

933 ms

leerlingen-studeren.png

leerlingen-studeren.png

2142 ms

MG_5003-2-400x400.jpg

MG_5003-2-400x400.jpg

1300 ms

JEFFREY-HAMILTON-400x400.jpg

JEFFREY-HAMILTON-400x400.jpg

1222 ms

IRIS-VAN-DE-BRUG-400x400.jpg

IRIS-VAN-DE-BRUG-400x400.jpg

803 ms

kalsbeek-leraar-leerlingen.jpg

kalsbeek-leraar-leerlingen.jpg

821 ms

Accessibility Review

kalsbeek.nl accessibility score

85

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

kalsbeek.nl best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

kalsbeek.nl SEO score

93

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

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Kalsbeek.nl 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 Kalsbeek.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

kalsbeek.nl

Open Graph data is detected on the main page of Kalsbeek. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: