Enter JSON on the left, then click Explore Tree (⌘↵).
JSON Viewer & Tree Inspector
Inspect nested JSON documents online with an interactive collapsible tree view, node search, and type badges. Private client-side JSON tree inspection.
How to Use JSON Viewer Online
Follow these quick steps to process your data online directly in your browser with zero latency and 100% privacy.
Example Input & Output
Visualizes nested JSON objects as an interactive, expandable tree node hierarchy with data type labels and fast search filtering.
{
"company": "TechCorp",
"departments": [
{
"name": "Engineering",
"lead": "Alex",
"headcount": 24,
"active": true
},
{
"name": "Product",
"lead": "Alex",
"headcount": 8,
"active": true
}
],
"settings": {
"region": "US-East",
"tier": "Enterprise"
}
}▼ {company: "TechCorp", departments: [...], settings: {...}}
company: "TechCorp"
▼ departments: [2 items]
▶ 0: {name: "Engineering", lead: "Alex", headcount: 24, active: true}
▶ 1: {name: "Product", lead: "Alex", headcount: 8, active: true}
▼ settings: {region: "US-East", tier: "Enterprise"}Common Use Cases
Large Payload Exploration
Navigate 10,000+ line JSON files without crashing your browser or getting lost in braces.
Data Type Inspection
Verify whether numeric values are formatted as integers, floats, or strings.
Specifications & Gotchas
Circular References
Standard JSON does not support circular references between objects.
Frequently Asked Questions
How do I search inside a JSON tree?
Use the search input above the tree view; matching keys and values are highlighted immediately.
Can I expand or collapse all nodes?
Yes, click "Expand All" or "Collapse All" to toggle the entire tree depth at once.
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