Tools & Wizards About Us
duurzame-energiebronnen.nl screenshot

Report Summary

  • 28

    Performance

    Renders faster than
    47% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

duurzame-energiebronnen.nl

Duurzame energie en alternatieve energiebronnen | Duurzame-energiebronnen.nl

Page Load Speed

3.1 sec in total

First Response

296 ms

Resources Loaded

2.6 sec

Page Rendered

194 ms

duurzame-energiebronnen.nl screenshot

About Website

Click here to check amazing Duurzame Energiebronnen content. Otherwise, check out these important facts you probably never knew about duurzame-energiebronnen.nl

De website duurzame-energiebronnen.nl is een informatieve website over duurzame energie, verschillende soorten energiebronnen en alternatieve energie.

Visit duurzame-energiebronnen.nl

Key Findings

We analyzed Duurzame-energiebronnen.nl page load time and found that the first response time was 296 ms and then it took 2.8 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

duurzame-energiebronnen.nl performance score

28

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value6.9 s

7/100

25%

SI (Speed Index)

Value6.4 s

41/100

10%

TBT (Total Blocking Time)

Value1,920 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.005

100/100

15%

TTI (Time to Interactive)

Value11.4 s

19/100

10%

Network Requests Diagram

duurzame-energiebronnen.nl

296 ms

www.duurzame-energiebronnen.nl

280 ms

www.duurzame-energiebronnen.nl

1269 ms

offerteaanvragen-isolatie.css

190 ms

bootstrap.min.css

381 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 84% of them (32 requests) were addressed to the original Duurzame-energiebronnen.nl, 5% (2 requests) were made to Fonts.gstatic.com and 3% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Duurzame-energiebronnen.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 51.7 kB (11%)

Content Size

450.8 kB

After Optimization

399.2 kB

  • HTML
  • JavaScript
  • CSS

In fact, the total size of Duurzame-energiebronnen.nl main page is 450.8 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. 55% of websites need less resources to load. Javascripts take 303.8 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 46.1 kB

  • Original 58.7 kB
  • After minification 56.3 kB
  • After compression 12.5 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 46.1 kB or 79% of the original size.

JavaScript Optimization

-1%

Potential reduce by 1.9 kB

  • Original 303.8 kB
  • After minification 303.6 kB
  • After compression 301.9 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

-4%

Potential reduce by 3.7 kB

  • Original 88.4 kB
  • After minification 88.4 kB
  • After compression 84.7 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. Duurzame-energiebronnen.nl has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 29 (91%)

Requests Now

32

After Optimization

3

  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duurzame Energiebronnen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 19 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

duurzame-energiebronnen.nl

duurzame-energiebronnen.nl

296 ms

www.duurzame-energiebronnen.nl

www.duurzame-energiebronnen.nl

280 ms

www.duurzame-energiebronnen.nl

www.duurzame-energiebronnen.nl

1269 ms

offerteaanvragen-isolatie.css

offerteaanvragen-isolatie.css

190 ms

bootstrap.min.css

bootstrap.min.css

381 ms

offerteaanvragen-zonnepanelen.css

offerteaanvragen-zonnepanelen.css

287 ms

bootstrap.min.css

bootstrap.min.css

389 ms

style.min.css

style.min.css

398 ms

styles.css

styles.css

287 ms

plugin.min.css

plugin.min.css

296 ms

gdpricons.min.css

gdpricons.min.css

385 ms

css

css

41 ms

style.css

style.css

393 ms

font-awesome.css

font-awesome.css

400 ms

style.css

style.css

470 ms

jquery.min.js

jquery.min.js

580 ms

jquery-migrate.min.js

jquery-migrate.min.js

481 ms

colormag-custom.js

colormag-custom.js

486 ms

js

js

73 ms

hooks.min.js

hooks.min.js

484 ms

i18n.min.js

i18n.min.js

493 ms

index.js

index.js

561 ms

index.js

index.js

601 ms

plugin.min.js

plugin.min.js

659 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

659 ms

colormag-slider-setting.js

colormag-slider-setting.js

659 ms

navigation.js

navigation.js

660 ms

jquery.fitvids.js

jquery.fitvids.js

668 ms

fitvids-setting.js

fitvids-setting.js

725 ms

scripts.js

scripts.js

726 ms

api.js

api.js

81 ms

wp-polyfill.min.js

wp-polyfill.min.js

725 ms

index.js

index.js

735 ms

output_cnqoyb.gif

output_cnqoyb.gif

251 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

76 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1x4gaVQ.woff

107 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

201 ms

recaptcha__en.js

recaptcha__en.js

55 ms

Accessibility Review

duurzame-energiebronnen.nl accessibility score

94

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

duurzame-energiebronnen.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

duurzame-energiebronnen.nl SEO score

98

Search Engine Optimization Advices

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 Duurzame-energiebronnen.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 Duurzame-energiebronnen.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

duurzame-energiebronnen.nl

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