Tools & Wizards About Us
theoryhouse.nl screenshot

Report Summary

  • 36

    Performance

    Renders faster than
    55% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

theoryhouse.nl

One-day Car Theory Course in English - Theoryhouse - Enroll now

Page Load Speed

7.9 sec in total

First Response

2.3 sec

Resources Loaded

5.1 sec

Page Rendered

405 ms

theoryhouse.nl screenshot

About Website

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

Easily pass the CBR Car Exam with this one-day theory course. Join the small group classes and you'll be fully prepared to get the certificate!

Visit theoryhouse.nl

Key Findings

We analyzed Theoryhouse.nl page load time and found that the first response time was 2.3 sec and then it took 5.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

theoryhouse.nl performance score

36

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.0 s

9/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

6/100

25%

SI (Speed Index)

Value10.4 s

8/100

10%

TBT (Total Blocking Time)

Value670 ms

44/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.1 s

42/100

10%

Network Requests Diagram

theoryhouse.nl

2347 ms

rssfeed.css

268 ms

main.css

270 ms

style.min.css

375 ms

theme.1.css

454 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 95% of them (40 requests) were addressed to the original Theoryhouse.nl, 5% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Theoryhouse.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 99.0 kB (10%)

Content Size

950.0 kB

After Optimization

850.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Theoryhouse.nl main page is 950.0 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. 30% of websites need less resources to load. Images take 665.2 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 60.6 kB

  • Original 76.4 kB
  • After minification 66.6 kB
  • After compression 15.8 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 9.8 kB, which is 13% 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 60.6 kB or 79% of the original size.

Image Optimization

-6%

Potential reduce by 38.2 kB

  • Original 665.2 kB
  • After minification 627.0 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. Theoryhouse images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 151 B

  • Original 148.7 kB
  • After minification 148.7 kB
  • After compression 148.5 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

-0%

Potential reduce by 107 B

  • Original 59.7 kB
  • After minification 59.7 kB
  • After compression 59.6 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. Theoryhouse.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 20 (53%)

Requests Now

38

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Theoryhouse. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

theoryhouse.nl

theoryhouse.nl

2347 ms

rssfeed.css

rssfeed.css

268 ms

main.css

main.css

270 ms

style.min.css

style.min.css

375 ms

theme.1.css

theme.1.css

454 ms

theme.update.css

theme.update.css

278 ms

jquery.min.js

jquery.min.js

416 ms

jquery-migrate.min.js

jquery-migrate.min.js

342 ms

rssfeed.js

rssfeed.js

344 ms

jquery.blockUI.min.js

jquery.blockUI.min.js

367 ms

add-to-cart.min.js

add-to-cart.min.js

432 ms

js.cookie.min.js

js.cookie.min.js

434 ms

woocommerce.min.js

woocommerce.min.js

450 ms

hooks.min.js

hooks.min.js

483 ms

wpm-public.p1.min.js

wpm-public.p1.min.js

512 ms

js

js

71 ms

uikit.min.js

uikit.min.js

702 ms

uikit-icons-balou.min.js

uikit-icons-balou.min.js

615 ms

theme.js

theme.js

542 ms

app.js

app.js

331 ms

sourcebuster.min.js

sourcebuster.min.js

336 ms

order-attribution.min.js

order-attribution.min.js

396 ms

gtm.js

gtm.js

47 ms

logo_theoryhouse.nl_mobile-cf842ada.png

logo_theoryhouse.nl_mobile-cf842ada.png

93 ms

logo_theoryhouse.nl_-f9a7746b.png

logo_theoryhouse.nl_-f9a7746b.png

90 ms

Car-theory-license-white-622efadd.jpeg

Car-theory-license-white-622efadd.jpeg

93 ms

Motor-theory-license-white-6306e3cb.jpeg

Motor-theory-license-white-6306e3cb.jpeg

90 ms

Driving-lessons-white-2765c630.jpeg

Driving-lessons-white-2765c630.jpeg

90 ms

Enroll-a-course-white-80606fa3.jpeg

Enroll-a-course-white-80606fa3.jpeg

87 ms

webshop-a97ee66f.jpeg

webshop-a97ee66f.jpeg

177 ms

contact-us-14caeaf3.jpeg

contact-us-14caeaf3.jpeg

178 ms

Theory-course-Car-a9866fe9.png

Theory-course-Car-a9866fe9.png

532 ms

Theory-course-motor-1-6c0bfeb5.png

Theory-course-motor-1-6c0bfeb5.png

445 ms

driving-lessons-amsterdam-857723d6.jpeg

driving-lessons-amsterdam-857723d6.jpeg

183 ms

kaart_rijscholen-260x300.png

kaart_rijscholen-260x300.png

275 ms

BHV-Amsterdam-076cbe86.png

BHV-Amsterdam-076cbe86.png

434 ms

rijschooldenk-f1f5b7ad.png

rijschooldenk-f1f5b7ad.png

266 ms

expactcenter_amsterdam-a9309e10.png

expactcenter_amsterdam-a9309e10.png

275 ms

ideal-logo-1-e6456361.png

ideal-logo-1-e6456361.png

442 ms

font-c0802b2b.woff

font-c0802b2b.woff

322 ms

font-4d0e9292.woff

font-4d0e9292.woff

330 ms

font-6d4057ed.woff

font-6d4057ed.woff

414 ms

Accessibility Review

theoryhouse.nl accessibility score

96

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

Best Practices

theoryhouse.nl best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

Page has valid source maps

SEO Factors

theoryhouse.nl SEO score

96

Search Engine Optimization Advices

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Theoryhouse.nl can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Theoryhouse.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

theoryhouse.nl

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