Report Summary

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    Best Practices

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Crocs Clogs | Sandalen | Schoenen | Crocs NL Officiële Site

Page Load Speed

3.6 sec in total

First Response

488 ms

Resources Loaded

2.8 sec

Page Rendered

344 ms screenshot

About Website

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

Net zo lichtvoetig als licht van gewicht; Crocs schoenen bieden ultiem comfort en ondersteuning voor elke gelegenheid en ieder seizoen.


Key Findings

We analyzed page load time and found that the first response time was 488 ms and then it took 3.1 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 performance score


Network Requests Diagram

488 ms


18 ms


279 ms


370 ms


380 ms

Our browser made a total of 104 requests to load all elements on the main page. We found that 2% of them (2 requests) were addressed to the original, 40% (42 requests) were made to and 27% (28 requests) were made to The less responsive or slowest element that took the longest time to load (776 ms) relates to the external source

Page Optimization Overview & Recommendations

Page size can be reduced by 990.3 kB (49%)

Content Size

2.0 MB

After Optimization

1.0 MB

In fact, the total size of main page is 2.0 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. 60% of websites need less resources to load. Javascripts take 769.4 kB which makes up the majority of the site volume.

HTML Optimization


Potential reduce by 130.2 kB

  • Original 151.2 kB
  • After minification 136.1 kB
  • After compression 20.9 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 130.2 kB or 86% of the original size.

Image Optimization


Potential reduce by 5.9 kB

  • Original 682.2 kB
  • After minification 676.4 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. Crocs images are well optimized though.

JavaScript Optimization


Potential reduce by 535.6 kB

  • Original 769.4 kB
  • After minification 748.9 kB
  • After compression 233.8 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 535.6 kB or 70% of the original size.

CSS Optimization


Potential reduce by 318.5 kB

  • Original 437.2 kB
  • After minification 389.5 kB
  • After compression 118.7 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. needs all CSS files to be minified and compressed as it can save up to 318.5 kB or 73% of the original size.

Requests Breakdown

Number of requests can be reduced by 51 (51%)

Requests Now


After Optimization


The browser has sent 100 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Crocs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 11 to 1 for CSS 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 neither this language nor any other was claimed in <html> or <meta> tags. 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 description is not detected on the main page of Crocs. 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: