PrivateTools
Developers

JSON Tree Viewer

Visualize JSON as a collapsible tree with search, path copy, and virtual scrolling — 100% in your browser.

100% client-side — your data never leaves this tab

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What is JSON Tree Viewer?

JSON Tree Viewer turns JSON into a collapsible hierarchical tree for fast exploration — like jsonviewer.stack.hu but modern and private. Search keys and values with highlight navigation, copy JSON paths for debugging, expand/collapse all, and handle large files with lazy rendering and virtual scrolling. No upload — everything runs in your browser.

Your JSON stays on your device. Tree rendering, search, and path copy are entirely in-browser with no server upload.

How to use JSON Tree Viewer

  1. 1Paste JSON into the input panel on the left.
  2. 2The Tree view opens automatically on the right.
  3. 3Use search to find keys or values; Prev/Next jumps between matches.
  4. 4Click 'path' on any node to copy its JSON path (e.g. data.users[0].email).

Examples

API response

Expand data → users → [0] → copy path data.users[0].email

{"data":{"users":[{"id":1,"email":"a@x.com"}]}}

Search

Search 'email' to highlight and jump to matching nodes

Tips & common mistakes

  • Double-click a node to expand it and all descendants at once.
  • Arrow keys move between visible nodes; Right expands, Left collapses.
  • Table mode appears automatically when root JSON is an array of objects.

Who uses this tool?

  • Visualizing API responses during frontend/backend development.
  • Finding nested keys in config files without reading raw text.
  • Copying JSON paths for jq, JSONPath, or test assertions.

Frequently asked questions

What is a JSON tree viewer?
A JSON tree viewer displays JSON as an expandable hierarchy — objects and arrays as nodes, with type badges, search, and path copy for easier debugging than raw text.
How do I copy a JSON path?
Hover any node in the tree and click 'path'. The path (like items[2].name) is copied to your clipboard for use in code or API tools.
Can I search inside JSON?
Yes. Use the search box to find keys or values. Matches are highlighted and you can navigate with Prev/Next; the tree auto-expands to show matches.
Will large JSON crash my browser?
The viewer uses lazy rendering (collapsed children are not drawn) and virtual scrolling (only visible rows). Very large files may still be slow — a size warning is shown above ~500 KB.
Is my JSON uploaded?
Never. Unlike many online JSON viewers, all processing is 100% client-side — your data never leaves your device.