JSON formatter & validator
Format, beautify, validate, and minify JSON online. Pinpoint syntax errors by line and column, sort keys, and copy or download the result.
CSS minifier
Minify CSS online to reduce file size. Removes whitespace and comments, merges rules, and shortens values. Shows the saving.
How to use CSS minifier
Minify CSS to shrink stylesheets for faster page loads. Powered by CSSO, which goes beyond stripping whitespace and comments:
- Merges duplicate selectors and declarations, and removes overridden ones
- Shortens colors, units, and values (
#ffffff→#fff,0px→0) - Optionally keeps
/*! license */comments
Shows the size saving. Open a .css file or paste code, then copy or download the result.
CSS minifier FAQs
Is CSS minifier free?
CSS minifier is a free online tool on ReallyUseful.Tools. No account is required.
Does CSS minifier run in my browser?
CSS minifier is designed to run in your browser where supported, so files can stay on your device instead of being uploaded to a server.
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