Visualize any JSON as an interactive, collapsible tree. See the full structure at a glance with color-coded types and expandable nodes.
100% Local
How to Use the JSON Tree Viewer
Paste JSON into the input box and click Render Tree. The right panel shows an interactive tree. Click any object or array node to collapse or expand its children. Color legend: purple keys, green strings, blue numbers, orange booleans, gray nulls.
Best for
Inspecting deeply nested API responses
Understanding the structure of a large JSON file
Quickly spotting unexpected keys or data types
Reviewing JSON payloads before sending them
Features
Interactive collapsible nodes for objects and arrays
Color-coded value types for instant recognition
Shows element counts for arrays and property counts for objects
Handles large JSON without freezing the browser
All processing runs locally in your browser. Your data is not uploaded to any server.