Data tool

JSON Formatter

Paste JSON or drop a .json file to pretty-print, minify, sort keys, copy, or download clean formatted output in your browser.

Runs Locally

This tool runs in your browser. Files never leave your device.

JSON input

Drop a .json file here or paste raw JSON below.

Open file

Drag and drop a JSON file anywhere inside this input card.

Formatted output

272 B formatted · 185 B minified

Sort keys

Valid JSON

Output is ready to copy, download, minify, or apply back to the input box.

{
  "project": "FreeProTool",
  "active": true,
  "tools": [
    {
      "name": "JSON Formatter",
      "category": "Data Tools"
    },
    {
      "name": "SVG Viewer",
      "category": "SVG Tools"
    }
  ],
  "settings": {
    "indent": 2,
    "localOnly": true
  }
}

What this tool does

JSON Formatter converts compact or messy JSON into a clean, readable format. Proper indentation and structure make it easier to review API responses, debug applications, and understand complex datasets. This tool is useful for developers, analysts, students, and anyone working with structured data.