Developer Tools

JavaScript Beautifier

Format minified JavaScript back into readable code.

What this tool does

Minified JavaScript is unreadable. Beautifier reformats it with proper indentation and line breaks so you can inspect, debug, or learn from production bundles.

Why it matters

JavaScript Beautifier saves you time and removes guesswork from everyday developer tools work. Restores readable structure — and because everything runs in your browser, your data stays private and results are instant.

Restores readable structure
Configurable indent
Handles modern syntax

How to use

Paste your minified JS.
Click Beautify.
Read or copy the formatted code.

Example output

// Formatted, validated output
{
  "status": "ok",
  "result": "..."
}

Real-world use cases

• Debugging production bundles
• Inspecting third-party scripts
• Code review

Tips & best practices

• 2-space indent is the de facto standard
• Combine with a linter for deeper analysis
• Source maps recover variable names; beautifiers don't

Frequently asked questions

Does it fix variable names?

No — minified names stay minified. Use source maps for that.

Does it handle TypeScript?

It treats TS as JS — usable but not perfect.

Is it safe?

Yes, everything runs in your browser.

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