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JavaScript Formatter — Format & Minify JS

Format and beautify JavaScript code

JavaScript Code

Ctrl/⌘+S or Ctrl/⌘+Enter to run

Output

Result will appear here

This tool runs on your device — your files and inputs never go anywhere.

How to Use JS Formatter

Format and beautify JavaScript code No signup, and nothing gets uploaded for most use.

  1. 1

    Paste your code, JSON, or data into the editor.

  2. 2

    Pick the transformation or validation options.

  3. 3

    Run it and inspect the results in real time.

  4. 4

    Copy the output or download it as a file.

Why you might like it

  • Nothing to upload — the work happens on your device.
  • Free with no signup, no watermarks, and no daily limits.
  • Works in any modern browser on any device — nothing to install.
  • Usually done in a few seconds, so it doesn't get in your way.
Try JS

Frequently Asked Questions

How do I format JavaScript and TypeScript code?▾

Paste minified or messy JS/TS code. The formatter applies standard Prettier formatting rules with syntax highlighting.

Is my code sent to a server?▾

No. All code beautification runs locally inside your browser sandbox.

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