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About JSON Formatter

Format and validate JSON for clear, readable structures. Ideal for API debugging and data review.

How To Use

  1. Paste JSON into the editor.
  2. Format or validate the data.
  3. Copy the cleaned output.

Features

  • Pretty formatting with indentation.
  • Validation and error detection.
  • Fast parsing for large payloads.
  • Runs locally in your browser.

Use Cases

  • Debugging API responses.
  • Reviewing configuration files.
  • Preparing JSON for docs or PRs.

Common Mistakes

  • Trailing commas.
  • Unescaped quotes.
  • Copying partial JSON objects.

Pro Tips

  • Validate before formatting to catch errors early.
  • Use minified JSON for production payloads.
  • Keep a raw copy for diff checks.

FAQ

Does it validate JSON?

Yes, it highlights invalid JSON.

Can I format large files?

Yes, within browser memory limits.

Is it safe?

Yes. No server upload.