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JSON Formatter

Format, validate, minify and sort keys, with a collapsible tree view of the result.

🔒 Local · no uploads⚡ Truly freeNo sign-upNo barriersTree viewSyntax checkOne-click minifyKey sort
← The formatted result will appear here

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Free · no sign-up · no uploads — good tools deserve to be seen

Common use cases

  • Debug API responses: format into a tree, click nodes to collapse/expand, and locate fields fast even in large payloads.
  • Check config files: formatting validates syntax and pinpoints errors to line and column.
  • Sort keys to make diffs cleaner for structurally-similar configs; Escape/Unescape handles JSON strings embedded in logs or code.
  • Minify for production: strip indentation and reduce transfer size.

Privacy

Parsing runs entirely in your browser. API data, keys and other sensitive content never pass through any server.