Tools & Wizards About Us
lasschool.nl screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

lasschool.nl

Lasopleiding | Leren Lassen | Opleidingscentrum Lasschool

Page Load Speed

4.9 sec in total

First Response

581 ms

Resources Loaded

3.8 sec

Page Rendered

529 ms

lasschool.nl screenshot

About Website

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

Lasschool biedt erkende NIL lasopleidingen met een hoog slagingspercentage. Begin direct aan uw lasopleiding om uw lasdiploma te halen!

Visit lasschool.nl

Key Findings

We analyzed Lasschool.nl page load time and found that the first response time was 581 ms and then it took 4.3 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

lasschool.nl performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value9.5 s

0/100

25%

SI (Speed Index)

Value6.4 s

40/100

10%

TBT (Total Blocking Time)

Value560 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0.206

60/100

15%

TTI (Time to Interactive)

Value10.7 s

22/100

10%

Network Requests Diagram

lasschool.nl

581 ms

wpforms-full.min.css

275 ms

cookieblocker.min.css

284 ms

js

62 ms

et-core-unified-1362.min.css

190 ms

Our browser made a total of 90 requests to load all elements on the main page. We found that 29% of them (26 requests) were addressed to the original Lasschool.nl, 64% (58 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (719 ms) belongs to the original domain Lasschool.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 385.3 kB (42%)

Content Size

927.9 kB

After Optimization

542.5 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Lasschool.nl main page is 927.9 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 506.4 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 334.6 kB

  • Original 381.2 kB
  • After minification 376.5 kB
  • After compression 46.6 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 334.6 kB or 88% of the original size.

Image Optimization

-10%

Potential reduce by 50.6 kB

  • Original 506.4 kB
  • After minification 455.7 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. Lasschool images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 83 B

  • Original 40.2 kB
  • After minification 40.2 kB
  • After compression 40.2 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.

Requests Breakdown

Number of requests can be reduced by 13 (43%)

Requests Now

30

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lasschool. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

lasschool.nl

lasschool.nl

581 ms

wpforms-full.min.css

wpforms-full.min.css

275 ms

cookieblocker.min.css

cookieblocker.min.css

284 ms

js

js

62 ms

et-core-unified-1362.min.css

et-core-unified-1362.min.css

190 ms

jquery.min.js

jquery.min.js

285 ms

jquery-migrate.min.js

jquery-migrate.min.js

294 ms

scripts.min.js

scripts.min.js

428 ms

jquery.fitvids.js

jquery.fitvids.js

284 ms

easypiechart.js

easypiechart.js

426 ms

salvattore.js

salvattore.js

424 ms

common.js

common.js

425 ms

complianz.min.js

complianz.min.js

426 ms

sticky-elements.js

sticky-elements.js

570 ms

js

js

104 ms

analytics.js

analytics.js

98 ms

Lasschool-home-w.png

Lasschool-home-w.png

719 ms

NIL-handvaardigeid-lasopleidingen.jpg

NIL-handvaardigeid-lasopleidingen.jpg

446 ms

Certificeringen-lasschool.jpg

Certificeringen-lasschool.jpg

416 ms

lastraining-op-maat-lasschool.jpg

lastraining-op-maat-lasschool.jpg

417 ms

op-locatie-lasopleiding.jpg

op-locatie-lasopleiding.jpg

416 ms

visueel-lasinspecteur-vtw.jpg

visueel-lasinspecteur-vtw.jpg

446 ms

hygienisch-lassen.jpg

hygienisch-lassen.jpg

595 ms

NIL-logo-nederlands-instituut-voor-lastechniek-lasopleidingen.png

NIL-logo-nederlands-instituut-voor-lastechniek-lasopleidingen.png

595 ms

hdn-hygienisch-lassen-1.png

hdn-hygienisch-lassen-1.png

596 ms

dnv-gl-certificeringen2.png

dnv-gl-certificeringen2.png

597 ms

cropped-Lasschool-home-w.png

cropped-Lasschool-home-w.png

598 ms

lasschool-lasopleidingen-4-c.jpg

lasschool-lasopleidingen-4-c.jpg

608 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVQ.woff

149 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

182 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVQ.woff

182 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVc.ttf

182 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVQ.woff

171 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

183 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVQ.woff

186 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

185 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVQ.woff

187 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

186 ms

modules.ttf

modules.ttf

569 ms

ping.js

ping.js

119 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w3aXw.woff

119 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCu173w3aX8.ttf

122 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w3aXw.woff

184 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCuM73w3aX8.ttf

187 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr73w3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr73w3aXw.woff

186 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr73w3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr73w3aX8.ttf

185 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w3aXw.woff

185 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvC73w3aX8.ttf

187 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw3aXw.woff

188 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtZ6Hw3aX8.ttf

191 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw3aXw.woff

190 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Hw3aX8.ttf

189 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Hw3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Hw3aXw.woff

189 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Hw3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCs16Hw3aX8.ttf

191 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr6Hw3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr6Hw3aXw.woff

194 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr6Hw3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCvr6Hw3aX8.ttf

191 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Xw3aXw.woff

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Xw3aXw.woff

192 ms

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Xw3aX8.ttf

JTUHjIg1_i6t8kCHKm4532VJOt5-QNFgpCtr6Xw3aX8.ttf

193 ms

pxiByp8kv8JHgFVrLEj6Z1JlEw.woff

pxiByp8kv8JHgFVrLEj6Z1JlEw.woff

191 ms

pxiByp8kv8JHgFVrLEj6Z1JlEA.ttf

pxiByp8kv8JHgFVrLEj6Z1JlEA.ttf

192 ms

pxiByp8kv8JHgFVrLCz7Z1JlEw.woff

pxiByp8kv8JHgFVrLCz7Z1JlEw.woff

193 ms

pxiByp8kv8JHgFVrLCz7Z1JlEA.ttf

pxiByp8kv8JHgFVrLCz7Z1JlEA.ttf

194 ms

pxiByp8kv8JHgFVrLDD4Z1JlEw.woff

pxiByp8kv8JHgFVrLDD4Z1JlEw.woff

195 ms

pxiByp8kv8JHgFVrLDD4Z1JlEA.ttf

pxiByp8kv8JHgFVrLDD4Z1JlEA.ttf

194 ms

pxiByp8kv8JHgFVrLBT5Z1JlEw.woff

pxiByp8kv8JHgFVrLBT5Z1JlEw.woff

195 ms

pxiByp8kv8JHgFVrLBT5Z1JlEA.ttf

pxiByp8kv8JHgFVrLBT5Z1JlEA.ttf

195 ms

collect

collect

74 ms

fbevents.js

fbevents.js

60 ms

pxiByp8kv8JHgFVrLGT9Z1JlEw.woff

pxiByp8kv8JHgFVrLGT9Z1JlEw.woff

109 ms

pxiByp8kv8JHgFVrLGT9Z1JlEA.ttf

pxiByp8kv8JHgFVrLGT9Z1JlEA.ttf

96 ms

pxiEyp8kv8JHgFVrJJnedA.woff

pxiEyp8kv8JHgFVrJJnedA.woff

85 ms

pxiEyp8kv8JHgFVrJJnedw.ttf

pxiEyp8kv8JHgFVrJJnedw.ttf

86 ms

pxiByp8kv8JHgFVrLDz8Z1JlEw.woff

pxiByp8kv8JHgFVrLDz8Z1JlEw.woff

86 ms

pxiByp8kv8JHgFVrLDz8Z1JlEA.ttf

pxiByp8kv8JHgFVrLDz8Z1JlEA.ttf

84 ms

pxiByp8kv8JHgFVrLFj_Z1JlEw.woff

pxiByp8kv8JHgFVrLFj_Z1JlEw.woff

83 ms

pxiByp8kv8JHgFVrLFj_Z1JlEA.ttf

pxiByp8kv8JHgFVrLFj_Z1JlEA.ttf

83 ms

pxiGyp8kv8JHgFVrLPTufntG.woff

pxiGyp8kv8JHgFVrLPTufntG.woff

85 ms

pxiGyp8kv8JHgFVrLPTufntF.ttf

pxiGyp8kv8JHgFVrLPTufntF.ttf

83 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs18NvsUhiYw.woff

TK3_WkUHHAIjg75cFRf3bXL8LICs18NvsUhiYw.woff

82 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs18NvsUhiYA.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs18NvsUhiYA.ttf

127 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUhiYw.woff

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUhiYw.woff

127 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUhiYA.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs1_FvsUhiYA.ttf

126 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs169vsUhiYw.woff

TK3_WkUHHAIjg75cFRf3bXL8LICs169vsUhiYw.woff

125 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs169vsUhiYA.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs169vsUhiYA.ttf

126 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs13FvsUhiYw.woff

TK3_WkUHHAIjg75cFRf3bXL8LICs13FvsUhiYw.woff

126 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs13FvsUhiYA.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs13FvsUhiYA.ttf

125 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1y9osUhiYw.woff

TK3_WkUHHAIjg75cFRf3bXL8LICs1y9osUhiYw.woff

125 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1y9osUhiYA.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs1y9osUhiYA.ttf

126 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1xZosUhiYw.woff

TK3_WkUHHAIjg75cFRf3bXL8LICs1xZosUhiYw.woff

124 ms

TK3_WkUHHAIjg75cFRf3bXL8LICs1xZosUhiYA.ttf

TK3_WkUHHAIjg75cFRf3bXL8LICs1xZosUhiYA.ttf

124 ms

Accessibility Review

lasschool.nl accessibility score

69

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

Form elements do not have associated labels

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

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

Best Practices

lasschool.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

SEO Factors

lasschool.nl SEO score

90

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

    NL

  • Encoding

    UTF-8

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

lasschool.nl

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