JSON Formatter

260606 · Paste raw JSON, get it back clean, indented, and validated. No install. No account.

What it does

Paste any JSON — minified, broken, or just ugly — and get it back formatted and validated instantly. Highlights errors if the JSON is invalid.

How to use

  1. Paste your JSON into the input
  2. Click Format — or it formats automatically as you type
  3. Copy the clean output

Notes

  • Works entirely in your browser — nothing is sent anywhere
  • Validates structure and highlights the exact line with the error
  • Supports minify mode to compress JSON for production