Text & Data · JSON

JSON Formatter

Beautify, validate and minify JSON with inline error reporting — everything runs locally, nothing is uploaded.

Parsed in your browser
Input
Formatted output
{
  "service": "devbelt",
  "version": "1.4.0",
  "tools": 42,
  "private": true,
  "tags": [
    "dev",
    "tools",
    "offline"
  ],
  "limits": {
    "rateLimit": null
  }
}

Frequently asked

The output box turns red and the parser error — with its position — appears under the input so you can jump straight to the problem.

No. This tool runs entirely as JavaScript in your browser — your input never leaves your device and nothing is logged.

How to use

1

Paste JSON into the input, or hit Load sample.

2

It formats as you type; syntax errors show the exact position.

3

Minify to compact it, or Copy the formatted output.

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