⚡ CSS Tools in the United Kingdom

CSS tools are software applications and libraries for processing CSS (Cascading Style Sheets), including static code analysis, transformation, cleanup, and more.

The United Kingdom of Great Britain and Northern Ireland (UK) is a Western European country with a population of over 67 million people.

According to our research, CSS tools are used on 1% of websites from the United Kingdom.

Statistics based on 170K+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the top CSS tools in the United Kingdom in 2026, based on market share.

The most popular is RTLCSS with an impressive share of 57.6%, followed by PostCSS with 56.4% and Autoprefixer with 34.8%.

RTLCSS 57.6%
PostCSS 56.4%
Autoprefixer 34.8%
Stylelint 2.4%
Custom Shape Dividers 0.8%
Animista 0.8%
PurgeCSS 0.7%

🚀 Highlights

Here is a list of the top tools that are more popular in the United Kingdom than worldwide.
Differences between global and country rankings are shown in parentheses.

6. Animista ^(-1)

✨ Best CSS Tools

Below is a more detailed list of 7 CSS tools used on sites from the United Kingdom, ranked by their market share.

Rank	Name	Market share
1	RTLCSS Jordan A framework for converting Left-To-Right CSS to Right-To-Left. FreeOpen source	57.6%
2	PostCSS Barcelona, Spain A tool for transforming CSS styles with JS plugins. FreeOpen source	56.4%
3	Autoprefixer Barcelona, Spain A PostCSS plugin to parse CSS and add vendor prefixes to CSS rules using values from Can I Use. FreeOpen source	34.8%
4	Stylelint An open-source CSS linter built on that helps developers detect errors and enforce consistent coding conventions in CSS, Sass, and Less stylesheets. FreeOpen source	2.4%
5	Custom Shape Dividers An online tool to generate fully responsive CSS dividers.	0.8%
6	Animista A CSS animation library of ready-made CSS animations.	0.8%
7	PurgeCSS A tool to analyze and remove unused CSS. FreeOpen source	0.7%

👉 See Also

🌎 CSS Tools in other countries

🗃️ About This Data

We evaluate the popularity of technologies based on the number of websites where we detect their usage.
Technologies without a detectable web footprint, and those we do not track, are not reflected in the calculated market share.
This report is based on the analysis of 170,175 websites from the United Kingdom.
We currently track the presence of 8 CSS tools across the web.
Of these, 7 were detected on websites from the United Kingdom.
Statistics were last calculated on August 4, 2026.
For more details, see our methodology and disclaimer.