Report Summary

  • 69

    Performance

    Renders faster than
    80% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 55% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    34% of websites

  • 85

    SEO

    Google-friendlier than
    62% of websites

aquaactief.zwemscore.nl

Internet Zwemscore Module - MijnZwemscore

Page Load Speed

3.2 sec in total

First Response

549 ms

Resources Loaded

2.5 sec

Page Rendered

211 ms

aquaactief.zwemscore.nl screenshot

About Website

Click here to check amazing Aquaactief Zwemscore content for Netherlands. Otherwise, check out these important facts you probably never knew about aquaactief.zwemscore.nl

Visit aquaactief.zwemscore.nl

Key Findings

We analyzed Aquaactief.zwemscore.nl page load time and found that the first response time was 549 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

aquaactief.zwemscore.nl performance score

69

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value4.8 s

30/100

25%

SI (Speed Index)

Value5.6 s

54/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.041

99/100

15%

TTI (Time to Interactive)

Value3.9 s

88/100

10%

Network Requests Diagram

aquaactief.zwemscore.nl

549 ms

index.asp

187 ms

index.asp

395 ms

index.asp

290 ms

screen.css

258 ms

Our browser made a total of 14 requests to load all elements on the main page. We found that all of those requests were addressed to Aquaactief.zwemscore.nl and no external sources were called. The less responsive or slowest element that took the longest time to load (679 ms) belongs to the original domain Aquaactief.zwemscore.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 110.5 kB (17%)

Content Size

649.7 kB

After Optimization

539.2 kB

In fact, the total size of Aquaactief.zwemscore.nl main page is 649.7 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. Only 10% of websites need less resources to load. Images take 545.9 kB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 3.2 kB

  • Original 5.2 kB
  • After minification 4.9 kB
  • After compression 2.0 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 3.2 kB or 62% of the original size.

Image Optimization

-8%

Potential reduce by 42.9 kB

  • Original 545.9 kB
  • After minification 503.0 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. Aquaactief Zwemscore images are well optimized though.

JavaScript Optimization

-64%

Potential reduce by 59.6 kB

  • Original 92.6 kB
  • After minification 92.6 kB
  • After compression 33.0 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 59.6 kB or 64% of the original size.

CSS Optimization

-80%

Potential reduce by 4.8 kB

  • Original 6.0 kB
  • After minification 4.2 kB
  • After compression 1.2 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. Aquaactief.zwemscore.nl needs all CSS files to be minified and compressed as it can save up to 4.8 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

10

After Optimization

10

The browser has sent 10 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Aquaactief Zwemscore. According to our analytics all requests are already optimized.

Accessibility Review

aquaactief.zwemscore.nl accessibility score

78

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

Heading elements are not in a sequentially-descending order

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

aquaactief.zwemscore.nl best practices score

67

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

aquaactief.zwemscore.nl SEO score

85

Search Engine Optimization Advices

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

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Aquaactief.zwemscore.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 Aquaactief.zwemscore.nl main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

Open Graph description is not detected on the main page of Aquaactief Zwemscore. 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: