Tools & Wizards About Us
jankreeft.nl screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

jankreeft.nl

Kreeft Opleidingen - Opleidingscentrum Vervoer en Veiligheid

Page Load Speed

4 sec in total

First Response

267 ms

Resources Loaded

3.6 sec

Page Rendered

185 ms

jankreeft.nl screenshot

About Website

Click here to check amazing Jan Kreeft content. Otherwise, check out these important facts you probably never knew about jankreeft.nl

Kreeft Opleidingen is een landelijk werkend multifunctioneel opleidingscentrum op het gebied van Verkeer, Transport, Logistiek, Arbo en Veiligheid.

Visit jankreeft.nl

Key Findings

We analyzed Jankreeft.nl page load time and found that the first response time was 267 ms and then it took 3.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

jankreeft.nl performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

28/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value5.2 s

60/100

10%

TBT (Total Blocking Time)

Value210 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0.225

55/100

15%

TTI (Time to Interactive)

Value9.4 s

31/100

10%

Network Requests Diagram

www.kreeftopleidingen.nl

267 ms

www.kreeftopleidingen.nl

691 ms

css

50 ms

bootstrap.min.css

87 ms

icons.css

173 ms

Our browser made a total of 72 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Jankreeft.nl, 8% (6 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Maps.googleapis.com. The less responsive or slowest element that took the longest time to load (791 ms) relates to the external source Static.isv.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 182.5 kB (28%)

Content Size

641.9 kB

After Optimization

459.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jankreeft.nl main page is 641.9 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 65% of websites need less resources to load. Images take 382.3 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 71.9 kB

  • Original 81.6 kB
  • After minification 41.1 kB
  • After compression 9.8 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. This page needs HTML code to be minified as it can gain 40.5 kB, which is 50% 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 71.9 kB or 88% of the original size.

Image Optimization

-18%

Potential reduce by 70.2 kB

  • Original 382.3 kB
  • After minification 312.1 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, Jan Kreeft needs image optimization as it can save up to 70.2 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

-12%

Potential reduce by 16.9 kB

  • Original 136.2 kB
  • After minification 134.4 kB
  • After compression 119.3 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 16.9 kB or 12% of the original size.

CSS Optimization

-56%

Potential reduce by 23.5 kB

  • Original 41.8 kB
  • After minification 35.4 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. Jankreeft.nl needs all CSS files to be minified and compressed as it can save up to 23.5 kB or 56% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (46%)

Requests Now

61

After Optimization

33

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jan Kreeft. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.kreeftopleidingen.nl

www.kreeftopleidingen.nl

267 ms

www.kreeftopleidingen.nl

www.kreeftopleidingen.nl

691 ms

css

css

50 ms

bootstrap.min.css

bootstrap.min.css

87 ms

icons.css

icons.css

173 ms

style.css

style.css

246 ms

cookie.css

cookie.css

257 ms

modernizr.min.js

modernizr.min.js

260 ms

isv_pagetrack.js

isv_pagetrack.js

259 ms

jquery.min.js

jquery.min.js

357 ms

bootstrap.min.js

bootstrap.min.js

352 ms

velocity.min.js

velocity.min.js

357 ms

jquery.menu.js

jquery.menu.js

357 ms

jquery.cover.js

jquery.cover.js

376 ms

jquery.slides.js

jquery.slides.js

356 ms

jquery.validator.js

jquery.validator.js

356 ms

jquery.cookie.js

jquery.cookie.js

447 ms

readmore.min.js

readmore.min.js

449 ms

jquery.maps.js

jquery.maps.js

445 ms

script.js

script.js

449 ms

cookie.js

cookie.js

450 ms

js

js

121 ms

gtm.js

gtm.js

172 ms

isvcs

isvcs

666 ms

kantoorpand2.jpg

kantoorpand2.jpg

595 ms

logo.png

logo.png

161 ms

instagram.png

instagram.png

296 ms

blocks-rijbewijs-c.jpg

blocks-rijbewijs-c.jpg

296 ms

Ondernemersopleiding-beroepsgoederenvervoer.png

Ondernemersopleiding-beroepsgoederenvervoer.png

347 ms

bus1.jpg

bus1.jpg

346 ms

Rijbewijs-A.png

Rijbewijs-A.png

346 ms

Rijbewijs-B.png

Rijbewijs-B.png

297 ms

Rijbewijs-BE.png

Rijbewijs-BE.png

339 ms

blocks-rijbewijs-ce.jpg

blocks-rijbewijs-ce.jpg

344 ms

blocks-rijbewijs-c1.jpg

blocks-rijbewijs-c1.jpg

345 ms

Rijbewijs-T.png

Rijbewijs-T.png

493 ms

blocks-busrijbewijs.jpg

blocks-busrijbewijs.jpg

494 ms

blocks-chauffeur-lzv.jpg

blocks-chauffeur-lzv.jpg

491 ms

Opleiding-ADR.png

Opleiding-ADR.png

490 ms

blocks-hetnieuwerijden.jpg

blocks-hetnieuwerijden.jpg

492 ms

blocks-heftruckreachtruck.jpg

blocks-heftruckreachtruck.jpg

492 ms

blocks-bhv.jpg

blocks-bhv.jpg

602 ms

blocks-placeholder.jpg

blocks-placeholder.jpg

602 ms

stap-banner.png

stap-banner.png

654 ms

dappr.png

dappr.png

600 ms

functional.svg

functional.svg

598 ms

social.svg

social.svg

584 ms

marketing.svg

marketing.svg

697 ms

6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7g.ttf

6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7g.ttf

30 ms

6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwlxdr.ttf

6xKydSBYKcSV-LCoeQqfX1RYOo3ik4zwlxdr.ttf

49 ms

6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwlxdr.ttf

6xKydSBYKcSV-LCoeQqfX1RYOo3i54rwlxdr.ttf

61 ms

6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwlxdr.ttf

6xKydSBYKcSV-LCoeQqfX1RYOo3ig4vwlxdr.ttf

63 ms

6xK1dSBYKcSV-LCoeQqfX1RYOo3qPZ7nsDc.ttf

6xK1dSBYKcSV-LCoeQqfX1RYOo3qPZ7nsDc.ttf

64 ms

6xKwdSBYKcSV-LCoeQqfX1RYOo3qPZZMkids18E.ttf

6xKwdSBYKcSV-LCoeQqfX1RYOo3qPZZMkids18E.ttf

61 ms

kreeft.woff

kreeft.woff

642 ms

gen_204

gen_204

78 ms

analytics.js

analytics.js

72 ms

conversion_async.js

conversion_async.js

248 ms

fbevents.js

fbevents.js

98 ms

js

js

117 ms

bentonsans_medium-webfont.woff

bentonsans_medium-webfont.woff

403 ms

collect

collect

154 ms

582424359079602

582424359079602

127 ms

collect

collect

162 ms

99 ms

kantoorpand2.jpg

kantoorpand2.jpg

132 ms

101 ms

jquery-latest.min.js

jquery-latest.min.js

191 ms

isv2_2_119.js

isv2_2_119.js

791 ms

isvstyle_12.css

isvstyle_12.css

635 ms

ga-audiences

ga-audiences

178 ms

shopping-cart2.png

shopping-cart2.png

552 ms

Accessibility Review

jankreeft.nl accessibility score

68

Accessibility Issues

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

Buttons do not have an accessible name

High

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

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Best Practices

jankreeft.nl best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

jankreeft.nl SEO score

92

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

    NL

  • Language Claimed

    NL

  • Encoding

    UTF-8

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

jankreeft.nl

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