Report Summary

  • 35

    Performance

    Renders faster than
    55% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

pincode.wolters.nl

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Page Load Speed

2.6 sec in total

First Response

616 ms

Resources Loaded

2 sec

Page Rendered

1 ms

pincode.wolters.nl screenshot

About Website

Click here to check amazing Pincode Wolters content. Otherwise, check out these important facts you probably never knew about pincode.wolters.nl

Noordhoff Uitgevers biedt u voor het vak economie de succesvolle methode Pincode. Er is een editie voor de onderbouw, voor vmbo bovenbouw en voor de Tweede Fase

Visit pincode.wolters.nl

Key Findings

We analyzed Pincode.wolters.nl page load time and found that the first response time was 616 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

pincode.wolters.nl performance score

35

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

55/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value1,280 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.08

94/100

15%

TTI (Time to Interactive)

Value9.4 s

30/100

10%

Network Requests Diagram

pincode.wolters.nl

616 ms

pincode

290 ms

reset.css

167 ms

layout.css

169 ms

default.css

258 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 5% of them (1 request) were addressed to the original Pincode.wolters.nl, 79% (15 requests) were made to Noordhoffuitgevers.nl and 5% (1 request) were made to Accountbar.prod.toegang.nu. The less responsive or slowest element that took the longest time to load (660 ms) relates to the external source Noordhoffuitgevers.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 241.7 kB (79%)

Content Size

304.1 kB

After Optimization

62.4 kB

In fact, the total size of Pincode.wolters.nl main page is 304.1 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. 15% of websites need less resources to load. Javascripts take 249.7 kB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 2.5 kB

  • Original 3.8 kB
  • After minification 3.7 kB
  • After compression 1.3 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. 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 2.5 kB or 66% of the original size.

JavaScript Optimization

-79%

Potential reduce by 196.8 kB

  • Original 249.7 kB
  • After minification 177.5 kB
  • After compression 52.9 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 196.8 kB or 79% of the original size.

CSS Optimization

-84%

Potential reduce by 42.3 kB

  • Original 50.5 kB
  • After minification 36.2 kB
  • After compression 8.2 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. Pincode.wolters.nl needs all CSS files to be minified and compressed as it can save up to 42.3 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (88%)

Requests Now

16

After Optimization

2

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Pincode Wolters. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

pincode.wolters.nl accessibility score

82

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-hidden="true"] elements contain focusable descendents

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

Links do not have a discernible name

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

pincode.wolters.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

High

Missing source maps for large first-party JavaScript

SEO Factors

pincode.wolters.nl SEO score

89

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

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

    SV

  • Language Claimed

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Pincode.wolters.nl can be misinterpreted by Google and other search engines. Our service has detected that Swedish is used on the page, and it does not match the claimed Dutch language. Our system also found out that Pincode.wolters.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 description is not detected on the main page of Pincode Wolters. 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: