Dev tools

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.

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, you can inspect a JSON file online as a natural companion step. 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 instead of pasting hundreds of lines into chat.

Formatting JSON is rarely the only thing you're doing. You'll often need to encode or decode Base64, URL-encode a string, or decode a JWT in the same session, and browser-based dev tools sit next to this formatter in the dashboard.

Every dev tool here is free and runs in your browser. The paid side of NudgeHost is hosting and sharing, not the tools, and you can drop a file to get started whenever a formatted file needs to go to someone.

Drop a file here and get a shareable link in seconds.

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