JSON Formatter

Format, validate, and edit JSON data with tree view, expand/collapse, line numbers, and more.

How to use this JSON Formatter

Paste or type your JSON into the input field. Click Format to pretty-print your JSON with proper indentation (use 2 or 4 spaces toggle). Use Validate to check if your JSON is syntactically correct without formatting it. Click Minify to compress JSON by removing all whitespace. The tool displays errors clearly if your JSON is invalid. Copy the formatted output to clipboard or download as a .json file. The tree view allows you to expand/collapse nested objects and arrays.