Free online tool

JSON Viewer

Explore nested JSON in an expandable tree.

View JSON as a tree

Expand and collapse nested objects and arrays.

The JSON tree will appear here.

Explore JSON structure

The tree separates objects, arrays, keys, and primitive values. Expand or collapse branches to focus on the part of the document you need.

When to use a JSON viewer

A tree view is useful for inspecting API responses, configuration files, nested arrays, and unfamiliar data structures.

Frequently asked questions

Can I collapse nested values?

Yes. Objects and arrays can be expanded or collapsed independently.

Does the viewer upload JSON?

No. The tree is generated locally in your browser.