JSON formatter

Format and validate JSON, with error detection.

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How it works

  1. Paste your JSON, even if it's all on one line and hard to read.
  2. Click "Process": the tool validates the syntax and applies automatic indentation.
  3. Copy the nicely formatted result, or check the error message if the JSON isn't valid.

Frequently asked questions

What happens if my JSON has a syntax error?

The tool shows you the exact error message so you can pinpoint the problem (an extra comma, an unclosed quote, etc.).

Can it minify JSON instead of formatting it?

This tool is built for readable formatting; for the opposite, any code editor can strip the extra line breaks.

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