JSON Tree Viewer

Seeing structure instead of text

A big JSON blob is hard to navigate as a wall of text. A tree viewer renders it as a hierarchy of collapsible nodes, so you can fold away branches you do not care about and drill into the one you do. It turns "where is that field" from scrolling and counting braces into clicking down a path.

What the view shows you fast

Nesting depth becomes obvious at a glance, which is exactly what is invisible in minified text. You see which keys hold objects, which hold arrays, and how long those arrays are, without parsing brackets in your head. Collapsing the top level and expanding one branch at a time is the quickest way to understand an unfamiliar API response.

Example

This structure:

{
  "order": {
    "id": 7,
    "items": [ { "sku": "A1" }, { "sku": "B2" } ]
  }
}

renders as a tree like:

▾ order
    id: 7
  ▾ items [2]
    ▸ 0
    ▸ 1

The [2] next to items tells you the array length before you expand it, and each item collapses on its own.

Practical limits

Rendering thousands of nodes at once can bog a browser down, so very large documents may need you to collapse aggressively or query a slice first. For pulling a specific value rather than browsing, the JSON Query tool is faster.

FAQ

Can I edit in the tree? A viewer is read-only by design, meant for inspection. Editing is a separate concern handled by a formatter or editor.

Does it validate my JSON? It must parse the input to build the tree, so invalid JSON will not render and the error points you to the syntax problem.