Report Summary

  • 62

    Performance

    Renders faster than
    78% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    82% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

zadan.nl

TWOPINE - Online strategie, design en techniek uit Rijswijk

Page Load Speed

14.3 sec in total

First Response

264 ms

Resources Loaded

3.2 sec

Page Rendered

10.8 sec

zadan.nl screenshot

About Website

Welcome to zadan.nl homepage info - get ready to check Zadan best content right away, or after learning these important things about zadan.nl

Vanaf de Delftweg lossen wij als creatief bureau al meer dan 10 jaar complexe online vraagstukken op.

Visit zadan.nl

Key Findings

We analyzed Zadan.nl page load time and found that the first response time was 264 ms and then it took 14 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

zadan.nl performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value8.9 s

1/100

25%

SI (Speed Index)

Value4.1 s

79/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value6.8 s

55/100

10%

Network Requests Diagram

www.twopine.nl

264 ms

twopine.nl

452 ms

main.css

87 ms

DoNotCopyOrLinkThisFileElseYouWillNotGetAutoUpdatedHelpForYourUsers.js

36 ms

loading-attribute-polyfill.umd.js

173 ms

Our browser made a total of 108 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Zadan.nl, 1% (1 request) were made to Get.webgl.org. The less responsive or slowest element that took the longest time to load (874 ms) relates to the external source Twopine.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 66.6 kB (1%)

Content Size

10.0 MB

After Optimization

10.0 MB

In fact, the total size of Zadan.nl main page is 10.0 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. 85% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 10.0 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 19.8 kB

  • Original 24.9 kB
  • After minification 21.6 kB
  • After compression 5.1 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 3.4 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 19.8 kB or 79% of the original size.

Image Optimization

-0%

Potential reduce by 46.8 kB

  • Original 10.0 MB
  • After minification 10.0 MB

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. Zadan images are well optimized though.

Requests Breakdown

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

Requests Now

102

After Optimization

94

The browser has sent 102 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zadan. 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 from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

zadan.nl accessibility score

71

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

zadan.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

SEO Factors

zadan.nl SEO score

77

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

High

robots.txt is not valid

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zadan.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 Zadan.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 Zadan. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: