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JSON formatter & validator

Validate, pretty-print and minify JSON and find the exact error. Runs in your browser.

AvailableIn your browserInput: Text

How to use: JSON formatter & validator

  1. Paste JSON or load a file.
  2. Format with indentation or minify; errors show the line and column.
  3. Copy or download the result.

What it accepts and what you get

Input
JSON up to 2 million characters.
Output
Valid JSON, formatted or minified, with statistics.
Where your data is processed
Your data is processed in your browser and is not sent to our servers.

Limitations and notes

  • It validates JSON syntax, not a particular schema.
  • Very large numbers may lose precision when reformatted, as in any JavaScript.

Suggested next steps

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