Report Summary

  • 28

    Performance

    Renders faster than
    48% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 81

    SEO

    Google-friendlier than
    43% of websites

zakelijkglasvezel.nl

De grootste online leverancier van zakelijk glasvezel

Page Load Speed

3.6 sec in total

First Response

381 ms

Resources Loaded

2.8 sec

Page Rendered

413 ms

zakelijkglasvezel.nl screenshot

About Website

Click here to check amazing Zakelijk Glasvezel content. Otherwise, check out these important facts you probably never knew about zakelijkglasvezel.nl

ZakelijkGlasvezel.nl is dé grootste online leverancier van glasvezel verbindingen voor het bedrijfsleven in Nederland. Nog nooit heeft u zo gemakkelijk de verschillende zakelijk (glasvezel) internet a...

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Key Findings

We analyzed Zakelijkglasvezel.nl page load time and found that the first response time was 381 ms and then it took 3.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

zakelijkglasvezel.nl performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value11.6 s

0/100

25%

SI (Speed Index)

Value5.4 s

57/100

10%

TBT (Total Blocking Time)

Value1,260 ms

19/100

30%

CLS (Cumulative Layout Shift)

Value0.21

59/100

15%

TTI (Time to Interactive)

Value10.3 s

24/100

10%

Network Requests Diagram

zakelijkglasvezel.nl

381 ms

wp-emoji-release.min.js

93 ms

wppb.css

175 ms

styles.css

175 ms

settings.css

191 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 85% of them (69 requests) were addressed to the original Zakelijkglasvezel.nl, 9% (7 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Zakelijkglasvezel.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.4 MB (64%)

Content Size

2.1 MB

After Optimization

764.6 kB

In fact, the total size of Zakelijkglasvezel.nl main page is 2.1 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. CSS take 787.9 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 49.2 kB

  • Original 59.0 kB
  • After minification 56.8 kB
  • After compression 9.9 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 49.2 kB or 83% of the original size.

Image Optimization

-16%

Potential reduce by 84.8 kB

  • Original 534.7 kB
  • After minification 449.9 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, Zakelijk Glasvezel needs image optimization as it can save up to 84.8 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 532.8 kB

  • Original 742.6 kB
  • After minification 696.2 kB
  • After compression 209.8 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 532.8 kB or 72% of the original size.

CSS Optimization

-88%

Potential reduce by 692.9 kB

  • Original 787.9 kB
  • After minification 695.3 kB
  • After compression 95.0 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. Zakelijkglasvezel.nl needs all CSS files to be minified and compressed as it can save up to 692.9 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 47 (67%)

Requests Now

70

After Optimization

23

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zakelijk Glasvezel. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

zakelijkglasvezel.nl accessibility score

93

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

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

Best Practices

zakelijkglasvezel.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

zakelijkglasvezel.nl SEO score

81

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 Zakelijkglasvezel.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 Zakelijkglasvezel.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

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