Report Summary

  • 26

    Performance

    Renders faster than
    45% of other websites

  • 52

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

diveshop.nl

Diveshop, duikshop, duikwinkel, duikmateriaal, duikspullen kopen

Page Load Speed

4.8 sec in total

First Response

266 ms

Resources Loaded

4.2 sec

Page Rendered

279 ms

diveshop.nl screenshot

About Website

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

Duikwinkel, duikshop, duikcentrum, duik winkel, duik shop, duik centrum, duikmateriaal, snorkelen, duiken, duikkleding online kopen

Visit diveshop.nl

Key Findings

We analyzed Diveshop.nl page load time and found that the first response time was 266 ms and then it took 4.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

diveshop.nl performance score

26

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value12.0 s

0/100

25%

SI (Speed Index)

Value18.7 s

0/100

10%

TBT (Total Blocking Time)

Value400 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0.466

19/100

15%

TTI (Time to Interactive)

Value21.8 s

1/100

10%

Network Requests Diagram

diveshop.nl

266 ms

diveshop.nl

361 ms

www.diveshop.nl

1771 ms

css3.css

86 ms

header.css

172 ms

Our browser made a total of 99 requests to load all elements on the main page. We found that 87% of them (86 requests) were addressed to the original Diveshop.nl, 6% (6 requests) were made to Fonts.gstatic.com and 2% (2 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.8 sec) belongs to the original domain Diveshop.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.0 MB (63%)

Content Size

3.2 MB

After Optimization

1.2 MB

In fact, the total size of Diveshop.nl main page is 3.2 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. 65% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 159.9 kB

  • Original 180.4 kB
  • After minification 164.8 kB
  • After compression 20.4 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 159.9 kB or 89% of the original size.

Image Optimization

-57%

Potential reduce by 1.2 MB

  • Original 2.0 MB
  • After minification 861.2 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, Diveshop needs image optimization as it can save up to 1.2 MB or 57% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-71%

Potential reduce by 693.3 kB

  • Original 972.1 kB
  • After minification 968.2 kB
  • After compression 278.8 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 693.3 kB or 71% of the original size.

CSS Optimization

-21%

Potential reduce by 10.4 kB

  • Original 49.2 kB
  • After minification 49.2 kB
  • After compression 38.9 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. Diveshop.nl needs all CSS files to be minified and compressed as it can save up to 10.4 kB or 21% of the original size.

Requests Breakdown

Number of requests can be reduced by 28 (31%)

Requests Now

89

After Optimization

61

The browser has sent 89 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Diveshop. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

diveshop.nl accessibility score

52

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

diveshop.nl best practices score

50

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

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

diveshop.nl SEO score

85

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

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

    NL

  • Encoding

    UTF-8

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