Report Summary

  • 67

    Performance

    Renders faster than
    80% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 93% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 89

    SEO

    Google-friendlier than
    67% of websites

energie51.nl

Energie51 » Energie prijzen vergelijken & overstappen

Page Load Speed

2.7 sec in total

First Response

345 ms

Resources Loaded

2 sec

Page Rendered

292 ms

energie51.nl screenshot

About Website

Visit energie51.nl now to see the best up-to-date Energie51 content and also check out these interesting facts you probably never knew about energie51.nl

Vergelijk de tarieven van alle energieleveranciers en stap direct over. Onafhankelijk Energievergelijker. Bespaar direct veel geld op uw energie rekening m

Visit energie51.nl

Key Findings

We analyzed Energie51.nl page load time and found that the first response time was 345 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

energie51.nl performance score

67

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

75/100

10%

LCP (Largest Contentful Paint)

Value7.5 s

4/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value3.9 s

89/100

10%

Network Requests Diagram

energie51.nl

345 ms

www.energie51.nl

310 ms

style.css

110 ms

jquery-1.7.1.min.js

292 ms

css

60 ms

Our browser made a total of 18 requests to load all elements on the main page. We found that 72% of them (13 requests) were addressed to the original Energie51.nl, 11% (2 requests) were made to Google-analytics.com and 6% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Energie51.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 160.3 kB (24%)

Content Size

656.7 kB

After Optimization

496.4 kB

In fact, the total size of Energie51.nl main page is 656.7 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. 20% of websites need less resources to load. Images take 516.3 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 13.7 kB

  • Original 19.4 kB
  • After minification 17.8 kB
  • After compression 5.7 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 13.7 kB or 71% of the original size.

Image Optimization

-16%

Potential reduce by 80.3 kB

  • Original 516.3 kB
  • After minification 436.0 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, Energie51 needs image optimization as it can save up to 80.3 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-53%

Potential reduce by 60.6 kB

  • Original 113.9 kB
  • After minification 113.9 kB
  • After compression 53.3 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 60.6 kB or 53% of the original size.

CSS Optimization

-80%

Potential reduce by 5.7 kB

  • Original 7.1 kB
  • After minification 5.6 kB
  • After compression 1.4 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. Energie51.nl needs all CSS files to be minified and compressed as it can save up to 5.7 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

15

After Optimization

15

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Energie51. According to our analytics all requests are already optimized.

Accessibility Review

energie51.nl accessibility score

97

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.

Best Practices

energie51.nl best practices score

75

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

Page has valid source maps

SEO Factors

energie51.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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Energie51.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Energie51.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 Energie51. 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: