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🔒 Privacy Safe:All processing is done 100% locally in your browser, nothing is uploaded to the server.

JSON Formatter

Online JSON format, minify, validate and tree-edit, local large file support.

  • One-click format
  • Minify
  • Validate & locate
  • Tree fold

How to use JSON Formatter

  1. Paste JSON：Paste JSON text into the input
  2. Click Format：Click Format to beautify and validate
  3. Copy result：Copy formatted JSON or download file

FAQ

Will JSON be processed on the server?
No, all processing is done locally in the browser, nothing uploaded, safe for sensitive data.
How large JSON is supported?
Depends on browser memory, 50MB is smooth, 500MB large files use chunking or local editor.