Minify CSS to a single compressed line — or beautify and format messy CSS into readable code. Shows file size savings, handles comments, zero values, and hex shortening.
Open CSS Minifier → free, no sign-inUnminified CSS slows page loads; unformatted CSS is unreadable. This tool does both directions: minify your stylesheet by stripping comments, collapsing whitespace, shortening hex colours (#ffffff → #fff), and removing trailing semicolons, then shows you exactly how many bytes you saved. In the other direction, the Beautify tab formats a single compressed line back into readable, properly indented CSS.
No tutorials. No learning curve. Open it and get started.
No server uploads. Everything runs locally in your browser. Your files and data never leave your device.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. CSS Minifier was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
Does it handle @media queries and nested rules?
Yes — the minifier handles standard CSS including media queries and pseudo-selectors.
Will it break string values that contain spaces?
No — content property values inside quotes are left untouched.
Can I control what gets stripped?
Yes — toggle each option (remove comments, shorten colours, zero values, trailing semicolons) independently.
Is my CSS uploaded anywhere?
No — everything runs in your browser. Your code never leaves your device.
Is this free?
Yes — free with no sign-in.
Free. Instant. No sign-in. Open it and get the job done.
Open CSS Minifier on Doathingy.com →