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JSON Formatter & Validator

Format, minify, sort and validate JSON with clear error messages. Paste sensitive payloads safely — nothing is sent anywhere.

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✓ Valid JSON
{
  "name": "ToolWand",
  "tools": 30,
  "private": true,
  "tags": [
    "pdf",
    "image",
    "dev"
  ]
}

How to use JSON Formatter & Validator

  1. 1Open JSON Formatter & Validator. It runs in your browser, no sign-up.
  2. 2Type or paste your input.
  3. 3Copy or download the result.

Questions

Is it safe to paste API responses with secrets?

Yes. Parsing happens in your browser with no network requests.

How big can the JSON be?

Several megabytes formats instantly on modern devices.

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