JSON Visualizer / Tree View
Inspect nested JSON quickly with a collapsible, searchable tree explorer.
JSON Input
Tree Explorer
Nodes: 0
Depth: 0
Type: —
Tree appears here after visualizing JSON.
Tip: click the triangle icon to expand/collapse object and array nodes.
About JSON Visualizer
Large JSON documents can be hard to scan in plain text. This tool renders an interactive tree view so you can quickly inspect nested keys, arrays, and values without losing context.
How to Use
- Paste your JSON into the input area.
- Click Visualize — the tree renders instantly below.
- Click any node to expand or collapse it.
- Use Expand All / Collapse All to toggle the entire tree at once.
How It Works
The tool parses your JSON using the browser's built-in JSON.parse(), then recursively renders each key-value pair as a collapsible tree node. Objects show {}, arrays show [], and values are colour-coded by type.
Example
Paste a GitHub API response to instantly see the nested structure: user → repos → each repo's metadata. Expand only the nodes you care about rather than scrolling through hundreds of lines of raw JSON.
Frequently Asked Questions
The tool will display a parse error with the approximate location of the syntax issue. Fix the JSON in the input and click Visualize again.
There is no hard limit enforced by the tool, but very large JSON documents (several MB) may be slow to render since all processing happens in your browser.
The visualizer is read-only. To edit JSON, use our JSON Formatter tool which provides a formatted editable view.
No. Everything runs in your browser. Your JSON data never leaves your device.