JSON Viewer — Interactive Tree Visualizer

The JSON Viewer is a free tool that transforms raw JSON data into an interactive, collapsible tree that you can explore visually. Over 300,000 developers search for JSON viewers monthly when debugging API responses, examining configuration files, or analyzing data exports. Paste any JSON and navigate it like a file explorer — expand and collapse objects and arrays, search for keys and values, click any node to see its JSONPath, and identify data types at a glance with color-coded syntax.

Unlike plain text formatters that simply add indentation, the JSON Viewer gives you a navigable, hierarchical view of your data. Objects and arrays become expandable branches. Primitive values are color-coded by type: green for strings, blue for numbers, orange for booleans, and gray for null. Each collapsed node shows a badge with its child count, so you always know the shape of your data without expanding everything.

1. Paste your JSON into the input area on the left. The viewer auto-detects valid JSON and begins parsing, or click “View Tree” to parse manually.
2. Explore the tree on the right. Click any object or array node to expand or collapse it. Use the “Expand to Level” buttons to control how deep the tree opens.
3. Search for data using the search bar above the tree. Matching keys and values are highlighted in yellow and parent nodes auto-expand to reveal them.
4. Copy JSONPath or values by clicking any node. The full JSONPath appears in a bar above the tree, and you can copy the path or the value with one click.

Interactive collapsible tree renders your JSON as a hierarchical structure where objects and arrays can be expanded or collapsed individually. This makes it easy to navigate deeply nested data without scrolling through thousands of lines of formatted text.

JSONPath on click shows the full path to any node when you click it. For example, clicking the “city” field inside a user's address shows $.users[0].address.city. Copy this path directly into your code to access that value programmatically.

Powerful search lets you find specific keys or values across the entire JSON structure. Matches are highlighted with a yellow background, parent nodes auto-expand to reveal them, and you can navigate between matches with arrow buttons. The match count is always visible.

Stats panel at the top of the tree shows key metrics: total keys, total values, maximum depth, size in bytes, and counts of arrays and objects. This gives you an instant understanding of the structure and complexity of your data.

Everything runs 100% in your browser. No data is uploaded, no account is required, and the tool works offline once loaded. It is fast, private, and completely free.