About this online online CSS formatter
hidevtool CSS formatter tidies styles copied from DevTools, minified bundles, or design handoffs. Paste a stylesheet or snippet, then beautify for review or minify for production-sized output.
Rules gain consistent indentation and line breaks; selectors, declarations, and at-rules stay intact so you can diff or paste back into your project.
Online CSS formatter capabilities
Pretty-print CSS
Format expands compact CSS into indented blocks—each selector and declaration on readable lines, with spacing between rules. Works on partial snippets as well as full stylesheets including @media and @keyframes blocks when syntax is valid.
Minify CSS
Minify strips comments and collapses whitespace after a successful beautify pass, producing a shorter one-line-style string for embeds, demos, or size checks.
Common use cases
How do I format CSS online?
Paste your CSS into the input area and click Format. The tool indents selectors and properties so nested @media blocks and long declaration lists are easier to read.
How do I beautify minified CSS from a build?
Paste the one-line bundle or snippet from DevTools and run Format. Line breaks and two-space indentation are restored while selectors and values stay the same.
How do I minify CSS for production?
Click Minify after pasting CSS. Comments and extra spaces are removed so you get a compact stylesheet to copy.
Frequently asked questions
- How do I format CSS online?
- Paste your CSS into the input area and click Format. The tool indents selectors and properties so nested @media blocks and long declaration lists are easier to read.
- How do I beautify minified CSS from a build?
- Paste the one-line bundle or snippet from DevTools and run Format. Line breaks and two-space indentation are restored while selectors and values stay the same.
- How do I minify CSS for production?
- Click Minify after pasting CSS. Comments and extra spaces are removed so you get a compact stylesheet to copy.
- What is the difference between formatting and minifying CSS?
- Formatting adds indentation and blank lines for humans. Minifying compacts the same valid CSS to fewer characters for transfer or inline use.
- Why does CSS fail to minify?
- The minifier reported a syntax problem—often an unclosed brace, bad @rule, or truncated paste. Fix the snippet or format first to spot the broken line, then minify again.