Text Tool Kit

Fast text utilities without the clutter

Minimal browser tools for common formatting, counting, and encoding tasks.

Back to all tools
Developer

JSON Formatter

Format raw JSON with readable indentation and catch invalid syntax before using it elsewhere.

How to use

  • Paste raw JSON into the input area.
  • The tool validates and formats the JSON automatically.
  • If the input is invalid, an error message appears instead of formatted output.

Formatting mode

Pretty-print, minify, or recursively sort JSON keys.

Common use cases

  • Pretty-print API payloads for debugging and review.
  • Minify JSON before embedding it into config or transport payloads.
  • Sort keys recursively to make diffs and comparisons easier.

FAQ

Can this validate malformed JSON?

Yes. Invalid input shows the parse error instead of formatted output.

Does sorting change the values?

No. Sort mode only changes object key order and leaves values intact.

Related tools

CSV to JSONJWT Parser

Learn more

How to format JSON for API debuggingA practical guide to validating, formatting, and comparing JSON responses before they slow down debugging.How to validate JSON before sending an API requestA practical workflow for checking JSON syntax and structure before a request causes avoidable API errors.How to pretty-print and minify JSON onlineUse readable formatting for debugging and compact output for transport without switching between multiple tools.How to convert CSV to JSON for debugging and data cleanupTurn spreadsheet-style rows into JSON objects so field names, missing values, and parsing issues are easier to inspect.

Privacy note

Tool processing happens in your browser. Some tools save your latest input in local storage for convenience. Review the privacy page before using the site on a shared device or before enabling optional third-party scripts on the site.