Free tool · runs in your browser
JSON formatter & validator
Paste JSON to format, validate, minify or sort it. Errors point to the exact line and column, and the tree view lets you explore nested data.
Input
Stays on your device
Parsing uses your browser's built-in JSON engine. Nothing you paste is uploaded or stored.
Precise errors
Invalid JSON shows the line and column of the first problem, and the editor jumps to it.
Shortcuts
Ctrl/⌘ + Enter formats. Ctrl/⌘ + Shift + M minifies.