Report Summary

  • 37

    Performance

    Renders faster than
    57% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

Page Load Speed

3.5 sec in total

First Response

767 ms

Resources Loaded

2.5 sec

Page Rendered

244 ms

osf-boekhoudpakket-administratie.nl screenshot

About Website

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Key Findings

We analyzed Osf-boekhoudpakket-administratie.nl page load time and found that the first response time was 767 ms and then it took 2.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

osf-boekhoudpakket-administratie.nl performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value6.4 s

9/100

25%

SI (Speed Index)

Value5.3 s

57/100

10%

TBT (Total Blocking Time)

Value790 ms

37/100

30%

CLS (Cumulative Layout Shift)

Value0.287

42/100

15%

TTI (Time to Interactive)

Value4.6 s

81/100

10%

Network Requests Diagram

767 ms

system.css

160 ms

position.css

168 ms

layout.css

251 ms

general.css

179 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 87% of them (34 requests) were addressed to the original Osf-boekhoudpakket-administratie.nl, 13% (5 requests) were made to A.fsdn.com. The less responsive or slowest element that took the longest time to load (893 ms) belongs to the original domain Osf-boekhoudpakket-administratie.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 451.8 kB (54%)

Content Size

843.4 kB

After Optimization

391.6 kB

In fact, the total size of Osf-boekhoudpakket-administratie.nl main page is 843.4 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. 25% of websites need less resources to load. Javascripts take 482.0 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 15.4 kB

  • Original 20.7 kB
  • After minification 20.0 kB
  • After compression 5.3 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 15.4 kB or 74% of the original size.

Image Optimization

-19%

Potential reduce by 55.4 kB

  • Original 286.3 kB
  • After minification 230.9 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, Osf Boekhoudpakket Administratie needs image optimization as it can save up to 55.4 kB or 19% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-70%

Potential reduce by 337.3 kB

  • Original 482.0 kB
  • After minification 470.2 kB
  • After compression 144.7 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 337.3 kB or 70% of the original size.

CSS Optimization

-80%

Potential reduce by 43.8 kB

  • Original 54.4 kB
  • After minification 38.8 kB
  • After compression 10.7 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. Osf-boekhoudpakket-administratie.nl needs all CSS files to be minified and compressed as it can save up to 43.8 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (47%)

Requests Now

38

After Optimization

20

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Osf Boekhoudpakket Administratie. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

osf-boekhoudpakket-administratie.nl accessibility score

82

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.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

osf-boekhoudpakket-administratie.nl best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

osf-boekhoudpakket-administratie.nl SEO score

91

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

    NL

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Osf-boekhoudpakket-administratie.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it does not match the claimed English language. Our system also found out that Osf-boekhoudpakket-administratie.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 Osf Boekhoudpakket Administratie. 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: