CSS Formatter / Minifier
Format, beautify, or minify CSS stylesheets.
Input
Drop file here or click to browse
Maximum 5 MB (.css,.scss,.less,.txt)
Output
About the CSS Formatter / Minifier
Beautify or minify CSS stylesheets in one step. Formatting turns a compressed production bundle back into something you can read and debug; minifying strips every unnecessary byte before you ship, which directly improves page load time.
How to use it
- 1 Paste your CSS, or drop in a .css file.
- 2 Click Format to expand it with one declaration per line.
- 3 Click Minify to strip comments and whitespace for production.
- 4 Copy the result or download it as a file.
What it does
- Beautify with consistent indentation and spacing
- Minify by removing comments and redundant whitespace
- Byte-size savings shown after minification
- Preserves media queries, custom properties and nested at-rules
Frequently asked questions
Is my stylesheet uploaded?
No. Every calculation happens locally in your browser using JavaScript. Nothing you paste is uploaded, logged, or stored on a server, which makes the tool safe to use with production data, credentials, and customer records.
How much smaller does minified CSS get?
Typically 20–40% before compression, depending on how much whitespace and commenting the source has. The bigger win comes from gzip or Brotli on top, which the minified form also compresses better because it is more uniform.
Will minifying break my CSS?
Not for valid stylesheets — only whitespace and comments are removed, and the cascade is untouched. The one thing to watch is a comment you actually need at runtime, such as a licence banner, since that will be stripped along with the rest.
Does it support modern CSS syntax?
Yes. Custom properties, nesting, container queries, layers, and modern color functions are all preserved. The formatter works structurally rather than against a fixed list of known properties, so new syntax passes through intact.