Outils CSS
Formateur CSS en ligne
Formatez du CSS moderne pour faciliter sa lecture et sa maintenance.
CSS guide
What is a CSS formatter?
A CSS formatter reorganizes code with indentation and line breaks so it is easier to read, review and maintain without intentionally changing its behavior.
What is it useful for?
Use it for debugging, code reviews, teamwork and understanding minified stylesheets. The formatter preserves property order and avoids aggressive optimizations.
Modern CSS
The conservative parser protects custom properties, media and container queries, keyframes, supports blocks, functions, URLs and CSS comments.
Format versus minify CSS
Formatting improves readability. Minifying removes unnecessary whitespace and optionally normal comments to reduce file size.
Frequently asked questions
CSS Formatter FAQ
How do I format CSS online?
Paste your CSS and select Format CSS. The formatted result will appear in the output editor.
Does the tool change CSS behavior?
It uses conservative formatting and does not reorder properties or perform optimizations. Review important production files before deployment.
Can I format minified CSS?
Yes. The formatter expands blocks, declarations and whitespace to make minified CSS easier to read.
Does it support media queries?
Yes. Blocks such as media, supports and container queries are handled as nested CSS blocks.
Does it support CSS variables?
Yes. Custom properties and their values are protected from unsafe transformations.
Can I minify CSS?
Yes. Minify CSS removes redundant whitespace and can remove normal comments while keeping special comments.
Are comments preserved?
Comments are preserved when formatting. In minified mode you can choose whether to keep them.
Is my CSS stored?
No permanent storage is intentionally used. Avoid entering secrets into any online tool.