Format and validate JSON.

Paste minified or messy JSON and get clean, indented, validated output back instantly.

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Key points

  • Paste minified or messy JSON and get clean, indented output back instantly.
  • Catches syntax errors and points to the exact line where the JSON breaks.
  • Switch between pretty-printed and minified output with a click.
  • Runs entirely in your browser. Your JSON never leaves your machine.

Drop your JSON formatter here and get a link in seconds.

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Minified JSON is fine for machines and miserable for humans. A formatter re-indents it into something readable and, just as usefully, tells you immediately if the JSON is broken and where. Paste your JSON here and it's tidied and checked in one step.

Once your JSON is clean, the inspect a JSON file online is the natural companion. It renders the structure as a collapsible tree so you can step through a large object without scrolling endlessly. If you need to hand the file to a teammate, you can share a JSON file as a link and share a link rather than pasting hundreds of lines into chat.

Formatting JSON is rarely the only thing you're doing. The encode or decode Base64, encode a URL and decode a JWT cover the other small jobs that come up constantly in development, and the full all of NudgeHost's dev tools collects them in one place.

Every dev tool here is free and runs in your browser. NudgeHost's paid plans on our pricing are about hosting and sharing, not the tools themselves.

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