Tools & Wizards About Us
energietref.nl screenshot

Report Summary

  • 92

    Performance

    Renders faster than
    92% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

energietref.nl

Home

Page Load Speed

1.9 sec in total

First Response

532 ms

Resources Loaded

1.2 sec

Page Rendered

211 ms

energietref.nl screenshot

About Website

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

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Key Findings

We analyzed Energietref.nl page load time and found that the first response time was 532 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.

Performance Metrics

energietref.nl performance score

92

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value2.1 s

96/100

25%

SI (Speed Index)

Value1.5 s

100/100

10%

TBT (Total Blocking Time)

Value330 ms

76/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.0 s

99/100

10%

Network Requests Diagram

energietref.nl

532 ms

image783.jpg

208 ms

image2574.jpg

207 ms

image1158.gif

216 ms

image7371.gif

202 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that all of those requests were addressed to Energietref.nl and no external sources were called. The less responsive or slowest element that took the longest time to load (628 ms) belongs to the original domain Energietref.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 65.0 kB (38%)

Content Size

169.6 kB

After Optimization

104.6 kB

  • HTML
  • Images

In fact, the total size of Energietref.nl main page is 169.6 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. Only 10% of websites need less resources to load. Images take 102.9 kB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 60.4 kB

  • Original 66.8 kB
  • After minification 65.4 kB
  • After compression 6.4 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 60.4 kB or 90% of the original size.

Image Optimization

-5%

Potential reduce by 4.7 kB

  • Original 102.9 kB
  • After minification 98.2 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. Energietref images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 14 (56%)

Requests Now

25

After Optimization

11

  • Images

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Energietref. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests and as a result speed up the page load time.

Network Requests Diagram

energietref.nl

energietref.nl

532 ms

image783.jpg

image783.jpg

208 ms

image2574.jpg

image2574.jpg

207 ms

image1158.gif

image1158.gif

216 ms

image7371.gif

image7371.gif

202 ms

image842.gif

image842.gif

206 ms

image843.gif

image843.gif

218 ms

image2634.gif

image2634.gif

211 ms

image922.gif

image922.gif

216 ms

image925.gif

image925.gif

217 ms

image473.gif

image473.gif

312 ms

image926.gif

image926.gif

321 ms

image929.gif

image929.gif

312 ms

image930.gif

image930.gif

318 ms

image932.gif

image932.gif

329 ms

image705.gif

image705.gif

331 ms

image1924.gif

image1924.gif

324 ms

image1259.jpg

image1259.jpg

323 ms

image1365.jpg

image1365.jpg

326 ms

image1372.jpg

image1372.jpg

329 ms

image1478.jpg

image1478.jpg

342 ms

image578.gif

image578.gif

341 ms

image19641.gif

image19641.gif

430 ms

image1241.jpg

image1241.jpg

622 ms

image3581.jpg

image3581.jpg

628 ms

image359.jpg

image359.jpg

430 ms

Accessibility Review

energietref.nl accessibility score

63

Accessibility Issues

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

energietref.nl best practices score

75

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

SEO Factors

energietref.nl SEO score

67

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    N/A

  • Encoding

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Energietref.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 Energietref.nl main page’s claimed encoding is windows-1252. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

energietref.nl

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