CSS Minifier & Beautifier
Compress CSS stylesheets to boost website speed or format minified CSS into clean, readable stylesheet rules.
What is CSS Minifier & Beautifier?
CSS minification strips redundant whitespace, comments (/* ... */), trailing semicolons, and zero-unit suffixes (e.g., converting 0px to 0) to reduce stylesheet payload sizes by up to 30%. Beautify mode restructures minified CSS into standard rule blocks with clean selector and property indentation.
Designed for accuracy, speed, and privacy, this tool runs entirely on your local device with zero network latency.
How to Use the CSS Minifier & Beautifier
- 1Paste your CSS stylesheet, media queries, or CSS variables into the editor.
- 2Select "Minify" to compress CSS rules into a single compact line, or "Beautify" to format with 2-space indentation.
- 3Optionally toggle "Preserve Comments" to retain critical banner comments or license declarations.
- 4Check the live percentage of bytes saved and copy the optimized CSS to your clipboard.
Formula & Calculation Logic
Conforms to W3C CSS Syntax Module Level 3 rules, safely compacting selectors, property declarations, and @media / @keyframes at-rules without altering cascade specificity or visual rendering.
CSS Optimization: Tokenization -> Comment Stripping -> Whitespace Normalization -> Rule CompactionCSS Minifier & Beautifier Frequently Asked Questions
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