NUNotUploadToolsRemove ads

JSON Formatter

Pretty-print, minify, and validate JSON — parsed entirely in your browser.

This runs entirely in your browser. Your JSON is never sent to a server — check your browser's network tab if you don't believe us.

How to use this tool

JSON Formatter pretty-prints, minifies, and validates JSON.

  1. Paste your JSON.
  2. Click "Format" for readable indentation, or "Minify" to strip whitespace.
  3. Invalid JSON shows a parse error instead of silently failing.