Tools & Wizards About Us
lasschool.nl screenshot

Report Summary

  • 7

    Performance

    Renders faster than
    21% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    82% of websites

  • 90

    SEO

    Google-friendlier than
    69% of websites

lasschool.nl

Lasopleiding | Leren Lassen | Opleidingscentrum Lasschool

Page Load Speed

5.1 sec in total

First Response

581 ms

Resources Loaded

3.8 sec

Page Rendered

723 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 4.5 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

lasschool.nl performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value10.0 s

0/100

25%

SI (Speed Index)

Value9.5 s

12/100

10%

TBT (Total Blocking Time)

Value2,790 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value1.032

2/100

15%

TTI (Time to Interactive)

Value11.2 s

20/100

10%

Network Requests Diagram

lasschool.nl

581 ms

wpforms-full.min.css

265 ms

js

79 ms

et-core-unified-1362.min.css

188 ms

mediaelementplayer-legacy.min.css

352 ms

Our browser made a total of 96 requests to load all elements on the main page. We found that 33% of them (32 requests) were addressed to the original Lasschool.nl, 60% (58 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (818 ms) belongs to the original domain Lasschool.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 440.1 kB (51%)

Content Size

855.9 kB

After Optimization

415.9 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Lasschool.nl main page is 855.9 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. 80% 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. HTML takes 384.5 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 337.2 kB

  • Original 384.5 kB
  • After minification 380.2 kB
  • After compression 47.4 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 337.2 kB or 88% of the original size.

Image Optimization

-14%

Potential reduce by 54.0 kB

  • Original 376.0 kB
  • After minification 321.9 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, Lasschool needs image optimization as it can save up to 54.0 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-51%

Potential reduce by 48.9 kB

  • Original 95.5 kB
  • After minification 95.5 kB
  • After compression 46.6 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 48.9 kB or 51% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (50%)

Requests Now

36

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 36 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 16 to 1 for JavaScripts and from 4 to 1 for CSS 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

265 ms

js

js

79 ms

et-core-unified-1362.min.css

et-core-unified-1362.min.css

188 ms

mediaelementplayer-legacy.min.css

mediaelementplayer-legacy.min.css

352 ms

wp-mediaelement.min.css

wp-mediaelement.min.css

350 ms

jquery.min.js

jquery.min.js

630 ms

jquery-migrate.min.js

jquery-migrate.min.js

464 ms

scripts.min.js

scripts.min.js

709 ms

jquery.fitvids.js

jquery.fitvids.js

463 ms

easypiechart.js

easypiechart.js

463 ms

salvattore.js

salvattore.js

463 ms

common.js

common.js

649 ms

mediaelement-and-player.min.js

mediaelement-and-player.min.js

778 ms

mediaelement-migrate.min.js

mediaelement-migrate.min.js

650 ms

wp-mediaelement.min.js

wp-mediaelement.min.js

649 ms

sticky-elements.js

sticky-elements.js

818 ms

analytics.js

analytics.js

262 ms

Lasschool-logo-mail-3.png

Lasschool-logo-mail-3.png

647 ms

lasschool-lasopleidingen-4-c.jpg

lasschool-lasopleidingen-4-c.jpg

718 ms

NIL-handvaardigeid-lasopleidingen.jpg

NIL-handvaardigeid-lasopleidingen.jpg

650 ms

Certificeringen-lasschool.jpg

Certificeringen-lasschool.jpg

645 ms

lastraining-op-maat-lasschool.jpg

lastraining-op-maat-lasschool.jpg

648 ms

op-locatie-lasopleiding.jpg

op-locatie-lasopleiding.jpg

650 ms

visueel-lasinspecteur-vtw.jpg

visueel-lasinspecteur-vtw.jpg

712 ms

hygienisch-lassen.jpg

hygienisch-lassen.jpg

712 ms

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

714 ms

hdn-hygienisch-lassen-1.png

hdn-hygienisch-lassen-1.png

715 ms

dnv-gl-certificeringen2.png

dnv-gl-certificeringen2.png

715 ms

socials-skills-400x250.jpg

socials-skills-400x250.jpg

767 ms

pijplassen-rvs-400x187.jpg

pijplassen-rvs-400x187.jpg

768 ms

financieringsoplossingen-lasschool-400x250.jpg

financieringsoplossingen-lasschool-400x250.jpg

769 ms

cropped-Lasschool-home-w.png

cropped-Lasschool-home-w.png

769 ms

ping.js

ping.js

169 ms

fbevents.js

fbevents.js

78 ms

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165 ms

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732 ms

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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: