Tools & Wizards About Us
tuimelaarzwolle.nl screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    72% of other websites

  • 93

    Accessibility

    Visual factors better than
    that of 82% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    57% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

tuimelaarzwolle.nl

Duikcentrum de Tuimelaar in Zwolle - 5 sterren PADI duikcentrum

Page Load Speed

4.2 sec in total

First Response

590 ms

Resources Loaded

3.2 sec

Page Rendered

382 ms

tuimelaarzwolle.nl screenshot

About Website

Click here to check amazing Tuimelaar Zwolle content. Otherwise, check out these important facts you probably never knew about tuimelaarzwolle.nl

Duikcentrum de Tuimelaar: ✓Proefles Duiken €39,- ✓Snorkelles €27,50 ✓Duikbrevet €489,- ✓Leukste Duikteam van Nederland ✓Duikwinkel, Luchtvulstation & Service

Visit tuimelaarzwolle.nl

Key Findings

We analyzed Tuimelaarzwolle.nl page load time and found that the first response time was 590 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

tuimelaarzwolle.nl performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.6 s

5/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

18/100

25%

SI (Speed Index)

Value7.9 s

22/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.127

82/100

15%

TTI (Time to Interactive)

Value7.3 s

49/100

10%

Network Requests Diagram

tuimelaarzwolle.nl

590 ms

typography2.php

95 ms

modal.css

173 ms

calendar.css

178 ms

front.css

274 ms

Our browser made a total of 147 requests to load all elements on the main page. We found that 33% of them (49 requests) were addressed to the original Tuimelaarzwolle.nl, 23% (34 requests) were made to Static.xx.fbcdn.net and 15% (22 requests) were made to Pbs.twimg.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Tuimelaarzwolle.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 912.7 kB (24%)

Content Size

3.8 MB

After Optimization

2.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Tuimelaarzwolle.nl main page is 3.8 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. 80% 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 3.1 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 26.9 kB

  • Original 34.3 kB
  • After minification 31.3 kB
  • After compression 7.4 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 26.9 kB or 78% of the original size.

Image Optimization

-13%

Potential reduce by 413.5 kB

  • Original 3.1 MB
  • After minification 2.7 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. Obviously, Tuimelaar Zwolle needs image optimization as it can save up to 413.5 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-73%

Potential reduce by 340.4 kB

  • Original 463.4 kB
  • After minification 417.7 kB
  • After compression 123.0 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 340.4 kB or 73% of the original size.

CSS Optimization

-85%

Potential reduce by 131.8 kB

  • Original 154.9 kB
  • After minification 134.4 kB
  • After compression 23.1 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. Tuimelaarzwolle.nl needs all CSS files to be minified and compressed as it can save up to 131.8 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 73 (50%)

Requests Now

145

After Optimization

72

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 145 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tuimelaar Zwolle. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 40 to 1 for JavaScripts and from 23 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

tuimelaarzwolle.nl

tuimelaarzwolle.nl

590 ms

typography2.php

typography2.php

95 ms

modal.css

modal.css

173 ms

calendar.css

calendar.css

178 ms

front.css

front.css

274 ms

style.css

style.css

184 ms

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style.css

185 ms

style.css

style.css

187 ms

style.css

style.css

259 ms

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531 ms

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core.js

274 ms

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275 ms

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caption.js

279 ms

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856 ms

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30 ms

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general.css

487 ms

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747 ms

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19 ms

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99 ms

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520 ms

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header.png

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Accessibility Review

tuimelaarzwolle.nl accessibility score

93

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

Links do not have a discernible name

Best Practices

tuimelaarzwolle.nl best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

tuimelaarzwolle.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

Links are not crawlable

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

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Tuimelaarzwolle.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 Tuimelaarzwolle.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

tuimelaarzwolle.nl

Open Graph description is not detected on the main page of Tuimelaar Zwolle. 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: