Paste messy or minified JSON and get clean, readable output instantly. The validator finds errors and shows the exact line and column, with the problem highlighted, so you can fix it fast. Choose 2 spaces, 4 spaces, tabs or minified output, and sort keys alphabetically. Syntax highlighting, expand/collapse, and escape/unescape for strings are built in. See size, line count, objects, arrays and properties, then copy or download. Your work is saved in your browser. No signup.