JSON Beautifier & Tree Viewer

A JSON beautifier formats minified or unstructured JSON into readable, indented text with syntax highlighting. This tool also renders the parsed JSON as an interactive tree where each object or array node can be expanded or collapsed, making large API responses or config files quick to navigate. Parsing happens entirely in your browser — nothing is sent to a server.

If your input has a syntax error, the tool surfaces the exact line and column from the parser so you can fix it without bouncing to a separate validator.