Tool4SaaS

JS Beautifier

Beautify minified JavaScript with smart indentation, brace placement, semicolon repair, and string-safe formatting to restore readable source code offline.

JS Beautifier

Format JavaScript with brace-based indentation (2 spaces) or minify by collapsing whitespace. Strings and comments are preserved on beautify. Max input 500KB.

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About the author

Written and maintained by the Tool4SaaS team. Every tool runs locally in your browser and is tested in-house for accuracy. Last updated: .

Frequently asked questions

No, formats based on braces and semicolons with string preservation.

Yes, minify mode strips comments and whitespace.

Yes, it is free, works offline in your browser, and your data never leaves your device.

How to use JS Beautifier

  1. Paste JS: Paste your JavaScript.
  2. Beautify: Click Format for pretty print.
  3. Copy: Copy formatted code.