Tools & Wizards About Us
zwaagstra.nl screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 48% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

zwaagstra.nl

Home - De specialist in bestrating | Zwaagstra Sierbestrating

Page Load Speed

11.4 sec in total

First Response

4.3 sec

Resources Loaded

6.9 sec

Page Rendered

130 ms

zwaagstra.nl screenshot

About Website

Visit zwaagstra.nl now to see the best up-to-date Zwaagstra content and also check out these interesting facts you probably never knew about zwaagstra.nl

De grootste showtuin van het noorden, Zwaagstra Sierbestrating is dé specialist op het gebied van bestratingen in Noord Nederland. Als het gaat om Sierbestrating, Erfverharding, Stapelblokken, Tuinver...

Visit zwaagstra.nl

Key Findings

We analyzed Zwaagstra.nl page load time and found that the first response time was 4.3 sec and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

zwaagstra.nl performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.4 s

0/100

10%

LCP (Largest Contentful Paint)

Value18.6 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value1,070 ms

25/100

30%

CLS (Cumulative Layout Shift)

Value0.038

100/100

15%

TTI (Time to Interactive)

Value19.1 s

2/100

10%

Network Requests Diagram

zwaagstra.nl

4331 ms

stylesheet.css

2067 ms

slideshow.css

1829 ms

jquery-1.6.1.min.js

2248 ms

jquery-ui-1.8.16.custom.min.js

2418 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 94% of them (32 requests) were addressed to the original Zwaagstra.nl, 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (4.3 sec) belongs to the original domain Zwaagstra.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 394.1 kB (32%)

Content Size

1.2 MB

After Optimization

853.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zwaagstra.nl main page is 1.2 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. 30% of websites need less resources to load. Images take 744.0 kB which makes up the majority of the site volume.

HTML Optimization

-93%

Potential reduce by 60.9 kB

  • Original 65.8 kB
  • After minification 31.2 kB
  • After compression 4.9 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. This page needs HTML code to be minified as it can gain 34.6 kB, which is 53% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 60.9 kB or 93% of the original size.

Image Optimization

-2%

Potential reduce by 16.9 kB

  • Original 744.0 kB
  • After minification 727.1 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. Zwaagstra images are well optimized though.

JavaScript Optimization

-69%

Potential reduce by 250.2 kB

  • Original 361.4 kB
  • After minification 348.8 kB
  • After compression 111.2 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 250.2 kB or 69% of the original size.

CSS Optimization

-86%

Potential reduce by 66.1 kB

  • Original 76.8 kB
  • After minification 54.3 kB
  • After compression 10.8 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. Zwaagstra.nl needs all CSS files to be minified and compressed as it can save up to 66.1 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (30%)

Requests Now

33

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zwaagstra. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zwaagstra.nl

zwaagstra.nl

4331 ms

stylesheet.css

stylesheet.css

2067 ms

slideshow.css

slideshow.css

1829 ms

jquery-1.6.1.min.js

jquery-1.6.1.min.js

2248 ms

jquery-ui-1.8.16.custom.min.js

jquery-ui-1.8.16.custom.min.js

2418 ms

jquery-ui-1.8.16.custom.css

jquery-ui-1.8.16.custom.css

2086 ms

jquery.cookie.js

jquery.cookie.js

1923 ms

jquery.fancybox-1.3.4.pack.js

jquery.fancybox-1.3.4.pack.js

2079 ms

jquery.fancybox-1.3.4.css

jquery.fancybox-1.3.4.css

2108 ms

tabs.js

tabs.js

2145 ms

common.js

common.js

2165 ms

jquery.nivo.slider.pack.js

jquery.nivo.slider.pack.js

2173 ms

ga.js

ga.js

63 ms

logo_zwaagstra.png

logo_zwaagstra.png

92 ms

arrow-right.png

arrow-right.png

86 ms

button-search.png

button-search.png

93 ms

mainmenu-background.jpg

mainmenu-background.jpg

91 ms

mainmenu-home.png

mainmenu-home.png

89 ms

home-poi.jpg

home-poi.jpg

86 ms

showtuin%20001%20(Kopie)-980x310.JPG

showtuin%20001%20(Kopie)-980x310.JPG

421 ms

showtuin%20003%20(Kopie)-980x310.JPG

showtuin%20003%20(Kopie)-980x310.JPG

334 ms

showtuin%20009%20(Kopie)-980x310.JPG

showtuin%20009%20(Kopie)-980x310.JPG

280 ms

panorama%202%2010-4%20(Kopie)-980x310.jpg

panorama%202%2010-4%20(Kopie)-980x310.jpg

356 ms

showtuin%20010%20(Kopie)-980x310.JPG

showtuin%20010%20(Kopie)-980x310.JPG

187 ms

showtuin%20007%20(Kopie)-980x310.JPG

showtuin%20007%20(Kopie)-980x310.JPG

469 ms

showtuin%20006%20(Kopie)-980x310.JPG

showtuin%20006%20(Kopie)-980x310.JPG

290 ms

showtuin%20005-213x160.JPG

showtuin%20005-213x160.JPG

366 ms

showtuin%20002-213x160.JPG

showtuin%20002-213x160.JPG

382 ms

showtuin%20004-213x160.JPG

showtuin%20004-213x160.JPG

425 ms

showtuin%20001-213x160.JPG

showtuin%20001-213x160.JPG

449 ms

twitter.png

twitter.png

454 ms

facebook.png

facebook.png

471 ms

arrows.png

arrows.png

453 ms

__utm.gif

__utm.gif

11 ms

Accessibility Review

zwaagstra.nl accessibility score

79

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-*] attributes do not match their roles

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

zwaagstra.nl best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

zwaagstra.nl SEO score

75

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

High

robots.txt is not valid

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

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 Zwaagstra.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 Zwaagstra.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

zwaagstra.nl

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