Free JSON Formatter & Validator

Minified JSON - the kind that comes back from an API as one giant unbroken line - is borderline unreadable. Paste it in here, and it gets formatted with proper indentation, so you can actually see the structure: which keys belong to which objects, where the arrays start and end, all of it laid out the way it should be. It also validates as it formats. If there's a syntax error somewhere - a missing comma, an unclosed bracket, a stray quote - it'll flag where the problem is instead of just failing silently. That alone saves a fair amount of time compared to manually scanning through a wall of JSON looking for what broke it. There's a minify option too, for when you need the opposite - stripping out the whitespace to shrink the payload before sending it somewhere. Toggle between the two depending on what you're working on. This one's aimed mostly at developers, so we kept the interface simple rather than over-explained. Paste, format, copy, done. No accounts, no rate limits on how many times you can use it in a session.