JSON Tree Viewer
WebBrowse a large JSON document as a collapsible tree with search and path copy. Drill into deep API responses and copy any node path instantly. Copy any path.
{
"user": {
"name": "Alice",
"age": 30,
"tags": [
"admin",
"user"
]
},
"active": true,
"balance": 99.95,
"lastLogin": null
}Related Tools
About JSON Tree Viewer
With a large, deeply nested JSON, plain text makes it hard to see the hierarchy. This tool pairs a syntax-highlighted code editor on the left with a collapsible tree on the right: search and highlight keys/values within the tree, click a node to copy its JSONPath, see inline array lengths and object key counts, and switch between Tree / Raw / Table views. Virtual scrolling keeps even huge JSON trees smooth. All parsing is local and nothing is uploaded. For example, pasting a deeply nested JSON renders it as a collapsible tree with type colors and field search.
How to Use
- Open the JSON Tree Viewer tool
- Enter or paste the content to process
- Adjust the output options as needed
- Click the Run button; results appear in real time
- Copy or export the result
Use Cases
- Browse API data — Render complex API JSON as a tree and expand level by level to view the fields you care about.
- Search to locate fields — Type a keyword to highlight every matching key or value, and jump between hits with the up/down arrows.
- Copy node paths — Click any node to copy its JSONPath (e.g. $.config.theme) for use in code or queries.
- View arrays as tables — Switch an array of objects to table view and compare rows like a spreadsheet.
- Inspect large data — Virtual scrolling lets huge JSON with tens of thousands of nodes expand smoothly without freezing the page.
- API response debugging — Paste a raw JSON API response and inspect the full structure with collapsible tree nodes.
- Large file exploration — Open a multi-MB JSON file in the viewer to navigate its structure without loading it into an editor.
FAQ
How large a JSON can it handle?
Thanks to virtual scrolling, the tree only renders nodes in the visible area, so multi-MB JSON with tens of thousands of nodes expands smoothly without freezing.
How do I search the tree?
Type a keyword in the search bar; all matching keys or values are highlighted with a hit count, and you can jump between matches with ↑/↓ or Enter.
How do I copy a node's path?
Hover a node to see its JSONPath, then click a leaf node to copy the path (e.g. $.users[0].name) for use in JSONPath queries or code.
When is table view available?
When the root is an array of objects, switch to table view and it uses the union of fields as column headers.
How does it differ from the formatter?
The JSON Formatter outputs editable indented text; this tool focuses on interactive browsing: collapsible tree, search, path copy and multiple views, better for understanding very large or deep JSON.
Does expanding a JSON several hundred levels deep freeze the page?
No. The tree renders only visible nodes via virtual scrolling and collapses deep large objects by default, so even tens of thousands of nodes stay smooth. When a search matches too much, narrow it with exact-match mode and expand level by level.
Why are some keys gray while others use different colors?
Colors are JSON type highlighting: strings, numbers, booleans, null and keys each use a distinct color (e.g. strings green, numbers blue), while red usually signals an invalid or erroneous node. You can adjust the palette in settings or disable highlighting entirely.