Tools & Wizards About Us
zonatlas.nl screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

zonatlas.nl

Zonatlas Dakcheck - Hoe geschikt is jouw dak voor zonnepanelen?

Page Load Speed

3.7 sec in total

First Response

213 ms

Resources Loaded

3.1 sec

Page Rendered

376 ms

zonatlas.nl screenshot

About Website

Click here to check amazing Zonatlas content for Netherlands. Otherwise, check out these important facts you probably never knew about zonatlas.nl

Zonatlas is hét zonne-energie platform van Nederland. Zonatlas heeft de geschiktheid van bijna 14 miljoen daken in Nederland in kaart gebracht.

Visit zonatlas.nl

Key Findings

We analyzed Zonatlas.nl page load time and found that the first response time was 213 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

zonatlas.nl performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value25.2 s

0/100

25%

SI (Speed Index)

Value12.9 s

2/100

10%

TBT (Total Blocking Time)

Value3,180 ms

2/100

30%

CLS (Cumulative Layout Shift)

Value0.276

44/100

15%

TTI (Time to Interactive)

Value24.5 s

0/100

10%

Network Requests Diagram

zonatlas.nl

213 ms

start

100 ms

476 ms

jquery.bxslider.css

195 ms

custom-styles.css

290 ms

Our browser made a total of 78 requests to load all elements on the main page. We found that 54% of them (42 requests) were addressed to the original Zonatlas.nl, 21% (16 requests) were made to Fonts.gstatic.com and 10% (8 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Zonatlas.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 337.0 kB (11%)

Content Size

3.2 MB

After Optimization

2.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zonatlas.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. 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 2.4 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 146.2 kB

  • Original 179.3 kB
  • After minification 176.6 kB
  • After compression 33.0 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 146.2 kB or 82% of the original size.

Image Optimization

-8%

Potential reduce by 178.6 kB

  • Original 2.4 MB
  • After minification 2.2 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. Zonatlas images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 10.2 kB

  • Original 544.1 kB
  • After minification 544.1 kB
  • After compression 533.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-2%

Potential reduce by 2.0 kB

  • Original 85.7 kB
  • After minification 85.7 kB
  • After compression 83.7 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. Zonatlas.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 27 (49%)

Requests Now

55

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 55 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zonatlas. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

zonatlas.nl

zonatlas.nl

213 ms

start

start

100 ms

476 ms

jquery.bxslider.css

jquery.bxslider.css

195 ms

custom-styles.css

custom-styles.css

290 ms

styles.css

styles.css

293 ms

front.min.css

front.min.css

297 ms

wpbaw-public.css

wpbaw-public.css

297 ms

pagenavi-css.css

pagenavi-css.css

296 ms

css

css

37 ms

style.css

style.css

198 ms

jquery.min.js

jquery.min.js

385 ms

front.min.js

front.min.js

292 ms

api.js

api.js

36 ms

jquery-migrate.min.js

jquery-migrate.min.js

293 ms

index.js

index.js

293 ms

index.js

index.js

294 ms

script.js

script.js

296 ms

all.js

all.js

50 ms

scripts.min.js

scripts.min.js

500 ms

jquery.fitvids.js

jquery.fitvids.js

490 ms

common.js

common.js

490 ms

jquery.bxslider.js

jquery.bxslider.js

491 ms

n4MNMKPvm7w

n4MNMKPvm7w

164 ms

zonatlas_logo.png

zonatlas_logo.png

357 ms

quickscan_background.jpg

quickscan_background.jpg

674 ms

quickscan_result_bg.jpg

quickscan_result_bg.jpg

483 ms

shadow.png

shadow.png

112 ms

zoninstraling.png

zoninstraling.png

112 ms

panelen.svg

panelen.svg

188 ms

check.svg

check.svg

357 ms

opbrengst.svg

opbrengst.svg

357 ms

zon-energie.svg

zon-energie.svg

480 ms

kosten.svg

kosten.svg

481 ms

arrow_links.svg

arrow_links.svg

483 ms

Zonatlas_opslag.jpg

Zonatlas_opslag.jpg

502 ms

torres-de-energia-2-1543008.jpg

torres-de-energia-2-1543008.jpg

921 ms

Zonatlas-voor-gemeente.png

Zonatlas-voor-gemeente.png

501 ms

gepersonaliseerde-data-export.png

gepersonaliseerde-data-export.png

501 ms

Partner-tool.png

Partner-tool.png

648 ms

mogelijkheden_bg.png

mogelijkheden_bg.png

1269 ms

footer_bg.jpg

footer_bg.jpg

646 ms

footer-border.png

footer-border.png

646 ms

et-divi-dynamic-4-late.css

et-divi-dynamic-4-late.css

701 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

25 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVQ.woff

29 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4uaVc.ttf

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30 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVQ.woff

30 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4uaVc.ttf

30 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVQ.woff

31 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4uaVc.ttf

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30 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVQ.woff

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42 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4uaVc.ttf

43 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVQ.woff

42 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVc.ttf

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgshZ1x4uaVc.ttf

43 ms

KFOmCnqEu92Fr1Mu4mxM.woff

KFOmCnqEu92Fr1Mu4mxM.woff

44 ms

KFOlCnqEu92Fr1MmEU9fBBc-.woff

KFOlCnqEu92Fr1MmEU9fBBc-.woff

44 ms

S6uyw4BMUTPHjx4wWA.woff

S6uyw4BMUTPHjx4wWA.woff

44 ms

modules.woff

modules.woff

776 ms

www-player.css

www-player.css

9 ms

www-embed-player.js

www-embed-player.js

31 ms

base.js

base.js

55 ms

ad_status.js

ad_status.js

159 ms

e5gkbp-8e8yKHwawBMj382SRQ9vyiiQXFxpBeadiAZg.js

e5gkbp-8e8yKHwawBMj382SRQ9vyiiQXFxpBeadiAZg.js

91 ms

embed.js

embed.js

39 ms

KFOmCnqEu92Fr1Mu4mxM.woff

KFOmCnqEu92Fr1Mu4mxM.woff

34 ms

KFOlCnqEu92Fr1MmEU9fBBc-.woff

KFOlCnqEu92Fr1MmEU9fBBc-.woff

34 ms

id

id

138 ms

Create

Create

31 ms

GenerateIT

GenerateIT

39 ms

qoe

qoe

20 ms

log_event

log_event

1 ms

n4MNMKPvm7w

n4MNMKPvm7w

145 ms

ad_status.js

ad_status.js

73 ms

Create

Create

194 ms

id

id

19 ms

GenerateIT

GenerateIT

19 ms

style.min.css

style.min.css

103 ms

Accessibility Review

zonatlas.nl accessibility score

88

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.

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

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

zonatlas.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

zonatlas.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

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

    EN

  • Encoding

    UTF-8

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

zonatlas.nl

Open Graph data is detected on the main page of Zonatlas. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: