Navigate nested JSON
Large API responses and configuration files can be difficult to scan as plain text. The tree groups objects and arrays into collapsible branches while preserving every key, index, and value type.
JSON Viewer
Explore JSON as a collapsible tree in your browser. Open nested objects and arrays without sending your data anywhere.
Viewer workspace
Parse JSON into a tree and open only the branches you need.
JSON input
JSON tree
Your JSON stays on this device.
Collapsed by default
The viewer begins with every branch closed, keeping large documents manageable. Expand individual branches as needed, or use Expand All and Collapse All for the entire document.
JSON Viewer FAQ
Does the viewer change my JSON?
No. It parses the document and presents the same values in a navigable tree. Strings, numbers, booleans, nulls, arrays, and objects remain distinct.
Can I view sensitive JSON?
The viewer runs locally in your browser and does not upload the document, making it suitable for private API responses and configuration data.