Tools & Wizards About Us
kalsbeek.nl screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

kalsbeek.nl

Kalsbeek College - vmbo - havo - vwo

Page Load Speed

7.1 sec in total

First Response

303 ms

Resources Loaded

5.3 sec

Page Rendered

1.5 sec

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: basis, kader, mavo, havo-6, 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 303 ms and then it took 6.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

kalsbeek.nl performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

16/100

10%

LCP (Largest Contentful Paint)

Value8.0 s

3/100

25%

SI (Speed Index)

Value9.0 s

14/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.016

100/100

15%

TTI (Time to Interactive)

Value7.9 s

43/100

10%

Network Requests Diagram

kalsbeek.nl

303 ms

www.kalsbeek.nl

437 ms

style.css

600 ms

sbi-styles.min.css

307 ms

style.min.css

395 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that all of those requests were addressed to Kalsbeek.nl and no external sources were called. The less responsive or slowest element that took the longest time to load (3 sec) belongs to the original domain Kalsbeek.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 530.8 kB (6%)

Content Size

9.1 MB

After Optimization

8.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Kalsbeek.nl main page is 9.1 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. 35% of websites need less resources to load. Images take 8.6 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 99.2 kB

  • Original 117.3 kB
  • After minification 107.8 kB
  • After compression 18.1 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 99.2 kB or 85% of the original size.

Image Optimization

-3%

Potential reduce by 273.4 kB

  • Original 8.6 MB
  • After minification 8.3 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

-1%

Potential reduce by 2.0 kB

  • Original 173.2 kB
  • After minification 173.2 kB
  • After compression 171.2 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. This website has mostly compressed JavaScripts.

CSS Optimization

-77%

Potential reduce by 156.2 kB

  • Original 202.8 kB
  • After minification 202.8 kB
  • After compression 46.6 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 156.2 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (7%)

Requests Now

42

After Optimization

39

  • Images
  • JavaScript
  • CSS

The browser has sent 42 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

kalsbeek.nl

kalsbeek.nl

303 ms

www.kalsbeek.nl

www.kalsbeek.nl

437 ms

style.css

style.css

600 ms

sbi-styles.min.css

sbi-styles.min.css

307 ms

style.min.css

style.min.css

395 ms

classic-themes.min.css

classic-themes.min.css

307 ms

email-decode.min.js

email-decode.min.js

3 ms

app.js

app.js

309 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

294 ms

logo.png

logo.png

381 ms

logo-text.png

logo-text.png

392 ms

arrow-submenu.png

arrow-submenu.png

306 ms

icon-search.png

icon-search.png

293 ms

menu-mobile.png

menu-mobile.png

298 ms

icon-video.png

icon-video.png

580 ms

icon-video-inverted.png

icon-video-inverted.png

580 ms

arrow-first.png

arrow-first.png

690 ms

arrow-third.png

arrow-third.png

702 ms

arrow-second.png

arrow-second.png

757 ms

arrow-right.png

arrow-right.png

771 ms

arrow-white.png

arrow-white.png

878 ms

arrow-white-big.png

arrow-white-big.png

875 ms

arrow-left.png

arrow-left.png

1079 ms

arrow-white-inverted.png

arrow-white-inverted.png

996 ms

Kalsbeek-College-004-e1680513097501.jpg

Kalsbeek-College-004-e1680513097501.jpg

1412 ms

arrow-white-right.png

arrow-white-right.png

1073 ms

Kalsbeek-College-001-600x280.jpg

Kalsbeek-College-001-600x280.jpg

1356 ms

arrow-white-right-inverted.png

arrow-white-right-inverted.png

1177 ms

KC_WhatsApp-small.png

KC_WhatsApp-small.png

1573 ms

placeholder.png

placeholder.png

1361 ms

icon-top.png

icon-top.png

1377 ms

icon-whatsapp-groen.svg

icon-whatsapp-groen.svg

1446 ms

31D5D3_1_0.woff

31D5D3_1_0.woff

1829 ms

31D5D3_0_0.woff

31D5D3_0_0.woff

1808 ms

Kalsbeek-locatie-Bredius_HR_105-scaled.jpg

Kalsbeek-locatie-Bredius_HR_105-scaled.jpg

1986 ms

Rutger-Punt1-800x800.jpg

Rutger-Punt1-800x800.jpg

1839 ms

Ondertekening-contract-Pouw.jpg

Ondertekening-contract-Pouw.jpg

1896 ms

IMG_3003-800x800.jpeg

IMG_3003-800x800.jpeg

2009 ms

Rutger-Punt1-400x400.jpg

Rutger-Punt1-400x400.jpg

2078 ms

Ondertekening-contract-Pouw-400x400.jpg

Ondertekening-contract-Pouw-400x400.jpg

2092 ms

IMG_3003-400x400.jpeg

IMG_3003-400x400.jpeg

2233 ms

3059.jpg

3059.jpg

2941 ms

Daan2-400x400.jpg

Daan2-400x400.jpg

2375 ms

foto-Diede-de-Groot-1-400x400.jpg

foto-Diede-de-Groot-1-400x400.jpg

2403 ms

Damon1-400x400.jpg

Damon1-400x400.jpg

2344 ms

VB1A5680.jpg

VB1A5680.jpg

3018 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

High

Missing source maps for large first-party JavaScript

SEO Factors

kalsbeek.nl SEO score

86

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

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: