Free JavaScript Beautifier

Beautify and indent minified or messy JavaScript into readable code.

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  • 🔒 Files never leave your device
  • ⚡ Converted in your browser
  • ✅ No account required

JavaScript Beautifier: The Complete Guide

Turn minified or messy JavaScript into clean, properly indented, readable code. Pick your indent style and copy the formatted result.

How to use the JavaScript Beautifier

  1. Paste or type your code, text, or data into the input box.
  2. Adjust options such as indent size, dialect, or flags when the tool offers them.
  3. The output updates instantly — copy it to your clipboard or download the file.

Features

  • Consistent indentation & spacing
  • 2/4-space or tab indent
  • Un-minifies compressed code
  • Copy or download the result

Why use this tool

  • Read and debug minified scripts
  • Standardize code formatting
  • Understand third-party bundles

What is a JavaScript beautifier?

A JavaScript beautifier re-indents and spaces out code so it's easy to read — the reverse of minification. It's invaluable for inspecting minified bundles, cleaning up generated code, or enforcing a consistent style before review.

Frequently Asked Questions

Can it fully reverse minification?

It restores readable formatting (indentation and spacing), but it can't recover original variable names that a minifier shortened.

Does it change what my code does?

No — beautifying only affects whitespace and layout, never behavior.

Is it free and private?

Yes — it's 100% free with no signup, and everything runs locally in your browser, so your data is never uploaded to a server.

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