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JSON Formatter

Format, validate & beautify JSON data

Free JSON Formatter & Validator — Beautify & Debug JSON Data

Working with compact API responses or minified JSON? Our free formatter beautifies JSON data with proper indentation and syntax highlighting, validates it against the JSON spec, and pinpoints errors so you can debug faster — all inside your browser with zero installs.

Key Features

  • Format and beautify JSON with customizable indentation
  • Real‑time syntax validation with error line numbers
  • Collapse and expand nested objects
  • Copy formatted output in one click
  • Free, private, no server upload

Paste your JSON and get a clean, validated, beautifully formatted result — free and instant.

Atif's Taimur Tools

48 Tools — Built for developers, by developers