Developer Utilities · Free tool
JSON Tree Viewer
Browse deep JSON structures interactively. Collapsible nodes, type-coded values (strings, numbers, booleans, null). Pure client-side, no upload.
Updated June 2026
Click any ▶ to expand a node manually
Tree
▼{}
"name": "Free Tool Arena"
"tools": 830
▼"categories": []
0: "dev"
1: "writing"
2: "media"
"live": true
▼"stats": {}
"guides": 600
"monthly_visits": null
▶"recent": [ 2 items ]
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What it does
Interactive collapsible tree view for navigating large JSON responses. Type-coded values (strings green, numbers blue, booleans amber, null gray), expandable nodes, and key paths. Better than a flat pretty-print when you need to walk a deep structure.
Pure client-side. Your JSON never leaves the browser — safe for API responses with credentials or PII.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/json-tree-viewer" width="100%" height="720" frameborder="0" loading="lazy" title="JSON Tree Viewer" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Paste any JSON into the input box.
- Click ▶ to expand nodes, ▼ to collapse.
- Adjust 'Auto-expand levels' for big payloads.
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