Minify CSS

Compress your styles.

Whitespace is overrated.

Input
Output
0 chars → 0 chars
No upload
Works offline
No tracking
// How it works

Three steps. Zero uploads.

01
Paste
Paste your CSS code. It stays on your device.
02
Minify
fwip strips comments, whitespace, and redundant characters. All processing happens in your browser.
03
Copy
Copy the minified output or download as .min.css. Nothing was ever uploaded.
// Why this is different

Your stylesheets never leave your machine.

Most online minifiers upload your code to a server. Your source code passes through systems you don't control.

fwip works differently. The minification engine runs entirely in your browser. Your code is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

// Questions

Frequently asked.

Are media queries preserved?▾
Yes. fwip only removes whitespace, comments, and unnecessary characters. All @media rules, selectors, and properties remain intact.
Does it handle @import statements?▾
Yes, @import statements are preserved as-is. fwip does not resolve or inline imports — it only removes whitespace and comments around them.
Will it break my selectors?▾
No. fwip removes whitespace around known CSS delimiters ({, }, :, ;, etc.) but does not modify selector names, property names, or values.
Can I minify multiple files?▾
Currently one file at a time. Paste each file separately. The offline bundle is limited only by your device.
How much smaller will my CSS get?▾
Typical savings are 15-35% depending on formatting style and comment density. Well-commented stylesheets with generous whitespace see the biggest reductions.
// Related tools

You might also need.

DEVELOPER
Minify JS
Remove whitespace and comments from JavaScript.
 DEVELOPER
Minify HTML
Remove whitespace and comments from HTML.
 DATA
Colour Converter
HEX, RGB, HSL, HSB, CMYK. Instant.
 DATA
Diff Checker
Compare two texts. Line-by-line diffs.
 DATA
JSON Formatter
Format, validate, and pretty-print JSON.
 DATA
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512.

Like it? Own it.

Offline. No browser. No internet. No excuses.
$15
This tool
  • Minify CSS · offline
  • Limited only by your device
  • 3 devices · one payment
Get this tool →
$99
Complete suite
  • All 250+ tools · offline
  • Limited only by your device
  • No daily use limit
  • 3 devices · one payment · updates included
Get the complete suite →
One-time payment · 3 devices · Updates included · Mac + Windows + Linux