Tools & Wizards About Us
theorieles.nl screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 96

    SEO

    Google-friendlier than
    90% of websites

theorieles.nl

Theorieles.nl - Gratis CBR theorie examens oefenen voor de auto, motor en bromfiets (2019)

Page Load Speed

2.3 sec in total

First Response

350 ms

Resources Loaded

1.8 sec

Page Rendered

212 ms

theorieles.nl screenshot

About Website

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

Het theorie examen oefenen voor het CBR auto theorie examen, bromfiets theorie examen en motor theorie examen 2019

Visit theorieles.nl

Key Findings

We analyzed Theorieles.nl page load time and found that the first response time was 350 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

theorieles.nl performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

45/100

10%

LCP (Largest Contentful Paint)

Value4.2 s

45/100

25%

SI (Speed Index)

Value3.9 s

82/100

10%

TBT (Total Blocking Time)

Value360 ms

72/100

30%

CLS (Cumulative Layout Shift)

Value0.037

100/100

15%

TTI (Time to Interactive)

Value4.9 s

77/100

10%

Network Requests Diagram

theorieles.nl

350 ms

theorieles.nl

368 ms

js

57 ms

main.css

115 ms

jquery.min.js

375 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 90% of them (38 requests) were addressed to the original Theorieles.nl, 5% (2 requests) were made to Googletagmanager.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (593 ms) belongs to the original domain Theorieles.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 79.0 kB (22%)

Content Size

354.1 kB

After Optimization

275.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Theorieles.nl main page is 354.1 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 221.5 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 12.2 kB

  • Original 15.5 kB
  • After minification 12.3 kB
  • After compression 3.3 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 3.2 kB, which is 21% 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 12.2 kB or 79% of the original size.

Image Optimization

-4%

Potential reduce by 8.7 kB

  • Original 221.5 kB
  • After minification 212.8 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. Theorieles images are well optimized though.

JavaScript Optimization

-53%

Potential reduce by 55.4 kB

  • Original 104.3 kB
  • After minification 102.9 kB
  • After compression 48.9 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 55.4 kB or 53% of the original size.

CSS Optimization

-21%

Potential reduce by 2.7 kB

  • Original 12.7 kB
  • After minification 12.7 kB
  • After compression 10.0 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. Theorieles.nl needs all CSS files to be minified and compressed as it can save up to 2.7 kB or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (22%)

Requests Now

37

After Optimization

29

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Theorieles. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

theorieles.nl

theorieles.nl

350 ms

theorieles.nl

theorieles.nl

368 ms

js

js

57 ms

main.css

main.css

115 ms

jquery.min.js

jquery.min.js

375 ms

desSlideshow.js

desSlideshow.js

292 ms

js

js

52 ms

analytics.js

analytics.js

19 ms

fonts.css

fonts.css

179 ms

reset.css

reset.css

264 ms

style.css

style.css

266 ms

media_queries.css

media_queries.css

264 ms

collect

collect

52 ms

header_bg.png

header_bg.png

88 ms

theorieles_logo.png

theorieles_logo.png

86 ms

header_nav_L.png

header_nav_L.png

88 ms

header_nav_C.png

header_nav_C.png

87 ms

home_icon.png

home_icon.png

132 ms

nav_sep.jpg

nav_sep.jpg

132 ms

L_bg.png

L_bg.png

172 ms

strip.png

strip.png

171 ms

cont_bg.jpg

cont_bg.jpg

172 ms

story_bg.png

story_bg.png

341 ms

auto_img.png

auto_img.png

233 ms

motor_img.png

motor_img.png

233 ms

bromfiets_img.png

bromfiets_img.png

256 ms

story_sep.png

story_sep.png

256 ms

quote_L.png

quote_L.png

256 ms

quote_R.png

quote_R.png

334 ms

footer_main_bg.jpg

footer_main_bg.jpg

335 ms

footer_bg.png

footer_bg.png

425 ms

footer_heading_bg.jpg

footer_heading_bg.jpg

341 ms

arrow_L2.png

arrow_L2.png

342 ms

theorie_examen_bg.png

theorie_examen_bg.png

435 ms

maak_examen_bt1_L.png

maak_examen_bt1_L.png

436 ms

maak_examen_bt1_R.png

maak_examen_bt1_R.png

425 ms

story_R_bg.png

story_R_bg.png

426 ms

maak_examen_bt2_L.png

maak_examen_bt2_L.png

426 ms

maak_examen_bt2_R.png

maak_examen_bt2_R.png

511 ms

lvnmbd-webfont.woff

lvnmbd-webfont.woff

509 ms

droidsans-bold-webfont.woff

droidsans-bold-webfont.woff

511 ms

droidsans-webfont.woff

droidsans-webfont.woff

593 ms

Accessibility Review

theorieles.nl accessibility score

89

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

theorieles.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

SEO Factors

theorieles.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

    NL

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Theorieles.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Theorieles.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

theorieles.nl

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