Tools & Wizards About Us

Report Summary

  • 55

    Performance

    Renders faster than
    72% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 44% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

zo-om.nl

ZO! Online Marketing - online marketing advies en uitvoering

Page Load Speed

3.9 sec in total

First Response

582 ms

Resources Loaded

2.3 sec

Page Rendered

1 sec

About Website

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

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Visit zo-om.nl

Key Findings

We analyzed Zo-om.nl page load time and found that the first response time was 582 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

zo-om.nl performance score

55

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

60/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

7/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value270 ms

82/100

30%

CLS (Cumulative Layout Shift)

Value0.14

79/100

15%

TTI (Time to Interactive)

Value6.0 s

64/100

10%

Network Requests Diagram

zo-om.nl

582 ms

autoptimize_296434a70abea2d0cf397cd716c2c0ba.css

89 ms

jquery.min.js

301 ms

autoptimize_f5e552888c29553ae4be53e27ce4de0c.js

432 ms

analytics.js

65 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 84% of them (16 requests) were addressed to the original Zo-om.nl, 11% (2 requests) were made to Google-analytics.com and 5% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (582 ms) belongs to the original domain Zo-om.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 107.2 kB (20%)

Content Size

544.2 kB

After Optimization

437.0 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zo-om.nl main page is 544.2 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. 35% of websites need less resources to load. Images take 314.0 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 40.0 kB

  • Original 50.6 kB
  • After minification 50.6 kB
  • After compression 10.6 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 40.0 kB or 79% of the original size.

Image Optimization

-3%

Potential reduce by 10.1 kB

  • Original 314.0 kB
  • After minification 303.8 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. ZO Om images are well optimized though.

JavaScript Optimization

-35%

Potential reduce by 57.0 kB

  • Original 164.5 kB
  • After minification 164.5 kB
  • After compression 107.5 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 57.0 kB or 35% of the original size.

CSS Optimization

-0%

Potential reduce by 46 B

  • Original 15.1 kB
  • After minification 15.1 kB
  • After compression 15.0 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. Zo-om.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 8 (50%)

Requests Now

16

After Optimization

8

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ZO Om. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

zo-om.nl accessibility score

77

Accessibility Issues

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

Buttons do not have an accessible name

High

Form elements do not have associated labels

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.

Best Practices

zo-om.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

zo-om.nl SEO score

100

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

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 Zo-om.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 Zo-om.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 ZO Om. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: