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JSON Formatter & Validator

Beautify, minify, and validate JSON.

How it works

  1. 1Paste JSON.
  2. 2Pick Beautify or Minify and indent size.
  3. 3Get formatted output or a clear error.

Use cases

  • Inspect API responses
  • Compress JSON for embedding
  • Validate before commit

Frequently asked questions

Is my JSON sent to a server?

No. Parsing and formatting happen entirely in your browser.

Does it support JSON5 or comments?

No — only standard JSON. Comments and trailing commas are rejected.

Read the guide
How to beautify and validate JSON
A JSON formatter is the cheapest debugging tool you own. Here is what it should — and should not — try to do for you.

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