CSS Minifier & Beautifier
Minify or beautify CSS code
How to Use CSS Minifier & Beautifier
- 1
Paste your CSS code into the input area.
- 2
Click Minify to remove whitespace and comments for production use.
- 3
Click Beautify to reformat compressed CSS into readable code.
- 4
Copy the output and use it in your project.
About CSS Minifier & Beautifier
Minify CSS to reduce file size or beautify messy CSS to make it readable. Shows size reduction percentage. Free online tool.
Best Use Cases
- •Minifying CSS files before deployment to reduce page load time
- •Beautifying minified CSS from production sites for debugging
- •Reducing CSS file size to meet performance budgets
- •Formatting messy CSS code for readability during code review
- •Cleaning up CSS exported from design tools before adding to a project
Examples
Production prep
Paste your CSS file. Click Minify to remove whitespace, comments, and reduce file size for faster loading.
Debug minified code
Paste minified CSS from a production site. Click Beautify to add indentation and line breaks for reading.
Size check
Paste your stylesheet and compare the original vs minified size to see the percentage reduction.
Common Mistakes to Avoid
- !Minifying CSS that uses content properties with important whitespace
- !Beautifying CSS and committing the formatted version over the source file
- !Expecting minification to fix CSS errors or invalid syntax
Limitations
- –Does not perform advanced optimizations like merging duplicate selectors
- –Cannot process Sass, LESS, or other CSS preprocessor syntax
- –Very large stylesheets may take a moment to process in the browser
Frequently Asked Questions
How much does CSS minification reduce file size?
Typically 20–40% for normal stylesheets. Removing comments and whitespace is the biggest win.