Free CSS Minifier & Beautifier Online
Minify CSS to reduce file size or beautify it for easy reading. Sort properties, remove duplicates, and see savings instantly. 100% client-side — your code stays private.
How to Use the CSS Minifier & Beautifier
- Paste your CSS into the input area above.
- Choose Minify to compress (remove whitespace, comments) or Beautify to format.
- Adjust indentation and toggle options like sorting properties or removing duplicates.
- Click "Process" or let it auto-process as you type.
- The savings indicator shows the size difference before and after.
- Use "Copy" or "Download" to save your result.
Why Use This CSS Minifier
Minifying CSS reduces file size by removing whitespace, comments, and unnecessary characters — improving page load times. Beautifying makes minified CSS readable again for debugging and editing.
The sort properties option organizes CSS declarations alphabetically, and remove duplicates eliminates redundant rules, helping you maintain clean and optimized stylesheets.
Frequently Asked Questions
No. The minifier only removes whitespace, comments, and optional shortening. The CSS remains functionally identical. Always test your minified CSS in your application.
It alphabetically sorts CSS declarations within each rule block, making it easier to find specific properties and maintain consistency across your codebase.
No. All processing happens entirely in your browser. Your CSS code never leaves your device.
Use Cases
Minified CSS Formatting
Format minified CSS output from build tools like Webpack, Vite, or PostCSS to make compressed stylesheets readable for debugging and editing.
Auto-Generated Cleanup
Clean up auto-generated stylesheets from CSS frameworks, preprocessors, or design tools by beautifying and standardizing the formatting.
Team Project Standardization
Standardize CSS formatting across team projects by applying consistent indentation, sorting properties, and removing duplicate rules.
Code Review Preparation
Prepare CSS for code reviews by beautifying minified or poorly formatted stylesheets so reviewers can easily read and understand the changes.
Readable CSS Debugging
Make CSS debugging easier by beautifying minified stylesheets to see property hierarchy, identify redundant rules, and trace style origins.