Private browser utility

JSON Viewer

View, validate, and pretty-print JSON locally in your browser. Paste API responses, configs, or logs and inspect formatted JSON without uploading data.

What this tool is good for

Pretty-print JSON with two-space indentation.

Check JSON syntax before copying it into a config, API client, or editor.

Show a compact structure summary for arrays and objects.

Example input

JSON input

{"user":{"id":42,"name":"Ada"},"roles":["admin","editor"],"active":true}