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CSS Minification Test

What is it?

Checks if any CSS files used in your page is minified. Minified files reduce page size and overall load time.

Pass rate:

  • Top 100 websites: 100%
  • All websites: 98%
Pass rates of Top 100 US websites
2021

97%

2022

100%

2023

100%

100

75

50

25

0

How do I fix it ?

In order to pass this test you must minify all CSS files. For this task you can use an online CSS minifier like YUI Compressor or cssmin.js.
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