JSON Viewer: Interactive Tree View for Any JSON Data

JSON Viewer vs JSON Formatter

While a JSON formatter shows formatted text, a JSON viewer presents the same data as an interactive, collapsible tree. This is especially valuable for deeply nested JSON (5+ levels deep) where even formatted text is difficult to navigate.

Tree Viewer Navigation

• Click ▼ to expand a node and see child properties
• Click ▶ to collapse a node and hide its subtree
• Collapsed nodes show a preview: { id: 1, name: ... }
• Array nodes show item count: [42 items]

Browser Extension vs Online JSON Viewer

Chrome and Firefox JSON viewer extensions auto-render JSON URLs in your browser's address bar. Our online viewer is better when you need to:

• View JSON that was sent as a POST body (not a URL)
• Edit and re-view the JSON after making changes
• Search within the JSON for a specific key or value
• Handle large JSON files without browser tab memory limits

// Example: Large API response in tree view
{
  "pagination": { "page": 1, "total": 1420 },  // ▼ collapsed
  "data": [                                      // ▼ [20 items]
    {
      "id": "usr_001",
      "profile": {
        "name": "Alice",                         // string
        "scores": [92, 87, 99],                  // [3 items]
        "address": { ... }                       // ▶ collapsed
      }
    }
    // ... 19 more items
  ]
}