Developer Tools

CSS Formatter

Format compact CSS rules. Your input stays in this browser during processing.

Private local processing

Your text and settings stays in this browser.

About CSS Formatter

Expand compact CSS rules into a readable, indented layout, useful for reviewing or editing a minified stylesheet.

What the result contains

CSS declarations and rule braces separated into a readable indented layout.

Accepted input

  • CSS
  • PLAIN
  • TXT

How to use CSS Formatter

  1. Paste the CSS rules you want to format.
  2. Run the formatter and review the indented declarations.
  3. Check values containing unusual braces or semicolons for correct splitting.
  4. Copy or download the formatted CSS.
Practical example

Expand a compact component stylesheet before editing one property.

Check your result before using it

Compare selectors, property values and quoted strings with the input after formatting. Whitespace inside a string can matter even when indentation outside it does not. Paste the result into a development copy of the page and inspect the affected styles before replacing a stylesheet. Formatting improves readability; it does not validate browser support, remove unused rules or prove that a layout is accessible on narrow screens.

When to use CSS Formatter

  • Expand a minified component stylesheet before adjusting one property
  • Make a compressed CSS file easier to review in a code review
  • Clean up inline styles copied from a build output

Important limitations

  • The formatter does not parse every modern CSS grammar edge case.
  • It does not minify, prefix or validate property support.

Troubleshooting CSS Formatter

A data URL or custom property is split badly

Use a standards-aware CSS formatter for values containing unusual braces or semicolons.

Private local processing

The text and settings is processed on this device and is not uploaded to MyFileNest. Closing or refreshing the page clears the active session.

Frequently asked questions

Practical limit: Large text or structured-data inputs can respond more slowly in the browser. Verify generated output before using it in a production workflow.