Report Summary

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    Best Practices

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Telefoonnummer opzoeken - Gsm nummers ook adressen...

Page Load Speed

1.8 sec in total

First Response

387 ms

Resources Loaded

1 sec

Page Rendered

344 ms screenshot

About Website

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Telefoonnummer opzoeken - Gsm nummers en namen. Zoeken op een eenvoudige manier. De snelste weg. Ook hier adres opzoeken kan...


Key Findings

We analyzed page load time and found that the first response time was 387 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 performance score


Network Requests Diagram

387 ms


30 ms


10 ms


11 ms


13 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 30% of them (11 requests) were addressed to the original, 27% (10 requests) were made to and 11% (4 requests) were made to The less responsive or slowest element that took the longest time to load (387 ms) belongs to the original domain

Page Optimization Overview & Recommendations

Page size can be reduced by 295.8 kB (64%)

Content Size

461.8 kB

After Optimization

166.0 kB

In fact, the total size of main page is 461.8 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 365.9 kB which makes up the majority of the site volume.

HTML Optimization


Potential reduce by 72.3 kB

  • Original 92.3 kB
  • After minification 92.0 kB
  • After compression 20.0 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 72.3 kB or 78% of the original size.

Image Optimization


Potential reduce by 10 B

  • Original 3.7 kB
  • After minification 3.7 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. Telefoonnummer Opzoeken images are well optimized though.

JavaScript Optimization


Potential reduce by 223.5 kB

  • Original 365.9 kB
  • After minification 364.7 kB
  • After compression 142.3 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 223.5 kB or 61% of the original size.

Requests Breakdown

Number of requests can be reduced by 23 (66%)

Requests Now


After Optimization


The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Telefoonnummer Opzoeken. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and as a result speed up the page load time.

SEO Factors SEO score


Language and Encoding

  • Language Detected


  • Language Claimed


  • Encoding


Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 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 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 data is detected on the main page of Telefoonnummer Opzoeken. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: