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JSON Formatter & Validator

Format messy JSON into readable structure, minify payloads for production, and validate syntax with clear error messages.

Features

  • Beautify JSON with configurable indentation
  • Minify JSON for compact payloads
  • Validate JSON with precise error messages
  • One-click copy to clipboard
  • Download formatted JSON as a file

How to use JSON Formatter

  • 1
    Paste or type JSON into the input panel.
  • 2
    Click Beautify to pretty-print, or Minify to compress.
  • 3
    Use Validate to check syntax without changing formatting.
  • 4
    Copy the result or download it as a.json file.

Examples

Beautify compact JSON

Input
{"name":"DevTools","active":true,"tags":["json","tools"]}
Output
{
 "name": "DevTools",
 "active": true,
 "tags": [
 "json",
 "tools"
 ]
}

About JSON Formatter

Paste messy JSON from an API or config dump, then beautify, minify, or validate before you ship it. Clear parse errors help you fix commas and brackets without guessing. Useful for fixtures, webhook payloads, and everyday debugging.

Frequently asked questions

No. Formatting and validation run entirely in your browser. Nothing is sent to our servers.

The validator shows a clear error message so you can locate and fix the syntax issue quickly.

Yes. Use the Download button to save the current output as a.json file.

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