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CSS Formatter

Format or minify CSS (Cascading Style Sheets) locally without rearranging rules.

Runs locally

Indent

  • 2 spaces: use two spaces for each indentation level.
  • 4 spaces: use four spaces for each indentation level.
  • Tab: use a tab character for each indentation level.
Input: up to 1 MB. Output: up to 2 MB. Files stay in your browser.
Guide

Format CSS (Cascading Style Sheets) to make rules and declarations easier to read, or minify supported styles for compact output. Use Format for nested rules that the minifier cannot safely handle.

  1. Add your document

    Paste into Input, choose an example or use Open file. You can also drop one local text file into Input.

  2. Choose and run

    Choosing an example shows the result immediately. When you type or change an option, Output updates after a short pause. Format runs immediately. Where available, Minify keeps the result compact as you continue typing.

  3. Read and keep the result

    Read Output. On a phone, select the Output tab. Use Copy output or Download to keep the result. Clear removes both fields.

On mobile, choose Output to read the result. Clear removes both fields.

Indent

  • 2 spaces: use two spaces for each indentation level.
  • 4 spaces: use four spaces for each indentation level.
  • Tab: use a tab character for each indentation level.
Shortcuts
  • Ctrl / Cmd + Enter — Run selected action
  • Ctrl / Cmd + Shift + C — Copy output
  • Ctrl / Cmd + S — Download output
  • ? — Show shortcuts outside text fields

Shortcuts work while focus is in the workspace. Copy and download need valid output.

Common questions
Does this run my code?
No. Code is parsed and rewritten locally, never executed. Markup stays text; links, scripts and images are not opened.
Is my document saved or uploaded?
No. Input, results, root names and filenames stay in this tab and are not remembered between visits. Only safe language and formatting choices may be stored on this device.
What are the limits?
Input is limited to 1 MB and output to 2 MB. Processing stops after five seconds. Type generation also allows up to 100 nesting levels and 10,000 values including containers. Large results use a preview; Download keeps the full successful output.
What does this check?
Ordinary CSS (Cascading Style Sheets) is supported, not Sass or Less. Minify preserves rule order and license comments; equivalent colors may use shorter notation. Nested rules and other unsupported minifier syntax show an error: use Format instead.

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