JSON input stays local
Make JSON readable.
Keep your data private.
Format, validate, sort, and inspect JSON instantly. Everything stays in your browser unless you load a URL.
100% client-sideJSON content stays in this browser
Strict validationNative JSON parser accuracy
Autosaved locallyPick up where you left off
A focused JSON workspace
Clean up API responses, configuration files, and payloads without sending sensitive data to a server.
Guides
Practical, private-first notes for checking JSON before it moves on.
Repair common JSON parse errorsA parser error is a location clue, not a reason to rewrite everything. Start at the named line and inspect the character immediately before it.Make API responses readable safelyPretty-printing helps you compare fields without changing the response. Keep a raw copy so formatting never becomes an accidental edit.Check JSON configuration before sharingConfiguration files can look harmless while carrying credentials or environment-specific addresses. Validate structure and review exposure separately.