JSON Formatter

What is JSON Formatter?

JSON Formatter is a free online tool to beautify, minify, and validate JSON (JavaScript Object Notation) data. JSON is the de facto standard for APIs, configuration files, and data interchange — but raw JSON often arrives as a single unreadable line, or fails to parse for reasons that are hard to spot by eye. This tool turns compact or messy JSON into a clean, consistently indented document, compresses it back down when you need to ship it, and pinpoints syntax errors with exact line and column numbers.

Features

• Beautify — Pretty-print JSON with your choice of 2 spaces, 4 spaces, or tab indentation
• Minify — Strip all insignificant whitespace for the smallest possible payload
• Validate — Instantly check whether your JSON is well-formed
• Precise errors — Syntax problems reported with exact line and column numbers
• Key sorting — Optionally sort all object keys alphabetically, recursively
• Live output — Results update as you type, no button mashing required

How to use

Paste or type JSON into the input panel. Pick a mode (Beautify, Minify, or Validate), choose your indentation, and toggle key sorting if you want alphabetized output. Copy the result with one click. If the JSON is invalid, the status bar tells you exactly where the parser gave up.

Privacy

All processing happens entirely in your browser. Your JSON is never uploaded, logged, or sent to any server.