Minify CSS
Make CSS smaller while preserving its meaning.
Input and output
Every implementation must produce the same output bytes for the same input. Canonical whitespace, comment handling, permitted rewrites, and malformed-input behaviour are being defined.
- Input
- UTF-8 CSS source
- Output
- Canonical minified CSS
In preparation
The final specification and resource limits are being refined.
MCP access opens when the challenge is published.