Tools & Wizards About Us
koptelefoons.nl screenshot

Report Summary

  • 98

    Performance

    Renders faster than
    95% of other websites

  • 72

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

koptelefoons.nl

Koptelefoons.nl - Vergelijk prijzen van populaire hoofdtelefoons

Page Load Speed

740 ms in total

First Response

24 ms

Resources Loaded

622 ms

Page Rendered

94 ms

koptelefoons.nl screenshot

About Website

Visit koptelefoons.nl now to see the best up-to-date Koptelefoons content and also check out these interesting facts you probably never knew about koptelefoons.nl

Vergelijk hier eenvoudig de beste koptelefoon aanbiedingen. Alle hoofdtelefoon modellen van headsets, oordopjes tot draadloze koptelefoons.

Visit koptelefoons.nl

Key Findings

We analyzed Koptelefoons.nl page load time and found that the first response time was 24 ms and then it took 716 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

koptelefoons.nl performance score

98

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

93/100

10%

LCP (Largest Contentful Paint)

Value2.1 s

96/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.018

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

koptelefoons.nl

24 ms

website.css

7 ms

menu_home.gif

21 ms

menu_divider.gif

29 ms

menu_categorieen.gif

29 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 94% of them (33 requests) were addressed to the original Koptelefoons.nl, 6% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (151 ms) belongs to the original domain Koptelefoons.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 20.9 kB (25%)

Content Size

83.0 kB

After Optimization

62.1 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Koptelefoons.nl main page is 83.0 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. 15% of websites need less resources to load. Images take 43.4 kB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 18.9 kB

  • Original 22.4 kB
  • After minification 18.4 kB
  • After compression 3.4 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. This page needs HTML code to be minified as it can gain 4.0 kB, which is 18% 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 18.9 kB or 85% of the original size.

Image Optimization

-4%

Potential reduce by 1.9 kB

  • Original 43.4 kB
  • After minification 41.5 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. Koptelefoons images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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 7 (21%)

Requests Now

34

After Optimization

27

  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Koptelefoons. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

koptelefoons.nl

koptelefoons.nl

24 ms

website.css

website.css

7 ms

menu_home.gif

menu_home.gif

21 ms

menu_divider.gif

menu_divider.gif

29 ms

menu_categorieen.gif

menu_categorieen.gif

29 ms

menu_merken.gif

menu_merken.gif

126 ms

menu_overons.gif

menu_overons.gif

28 ms

menu_contact.gif

menu_contact.gif

28 ms

tab_koptelefoon_home.gif

tab_koptelefoon_home.gif

151 ms

ga.js

ga.js

31 ms

tab_populaire-producten.gif

tab_populaire-producten.gif

30 ms

t_f8a64cbe28b9566c.jpg

t_f8a64cbe28b9566c.jpg

30 ms

t_76e71a35c0144a6a.jpg

t_76e71a35c0144a6a.jpg

29 ms

t_2181a9a1ee4d1e96.gif

t_2181a9a1ee4d1e96.gif

31 ms

t_7f05f49d63a94c44.jpg

t_7f05f49d63a94c44.jpg

141 ms

t_c92353f4ed6b82ec.jpg

t_c92353f4ed6b82ec.jpg

32 ms

tab_koptelefoon-tips.gif

tab_koptelefoon-tips.gif

32 ms

t_a5a0c812cc472660.jpg

t_a5a0c812cc472660.jpg

57 ms

t_c74cc6474f1cd2e3.jpg

t_c74cc6474f1cd2e3.jpg

57 ms

t_202fe0afe7422dba.jpg

t_202fe0afe7422dba.jpg

57 ms

tab_hoogste-review.gif

tab_hoogste-review.gif

58 ms

t_09ec14a78b557c8f.jpg

t_09ec14a78b557c8f.jpg

58 ms

tab_categorieen.gif

tab_categorieen.gif

60 ms

tab_merken.gif

tab_merken.gif

59 ms

tab_uitgebreid-zoeken.gif

tab_uitgebreid-zoeken.gif

59 ms

ga.js

ga.js

21 ms

header_logo.jpg

header_logo.jpg

48 ms

zoek_btn.gif

zoek_btn.gif

50 ms

boog_r.gif

boog_r.gif

49 ms

corners_bg_big.gif

corners_bg_big.gif

49 ms

corners.gif

corners.gif

118 ms

corners_bg.gif

corners_bg.gif

50 ms

koptelefoon_zwart.gif

koptelefoon_zwart.gif

49 ms

koptelefoon_groen.gif

koptelefoon_groen.gif

50 ms

__utm.gif

__utm.gif

12 ms

Accessibility Review

koptelefoons.nl accessibility score

72

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

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

Best Practices

koptelefoons.nl best practices score

75

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

SEO Factors

koptelefoons.nl SEO score

69

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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 Koptelefoons.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 Koptelefoons.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

koptelefoons.nl

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