JSON Tree Viewer

Visualize JSON as an interactive, collapsible tree with color-coded value types for easy exploration.

JSON Tree Explorer
JSON Input
Tree View
Tree will render after entering valid JSON.

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What is the JSON Tree Viewer?

Raw JSON — especially deeply nested API responses with 5+ levels of hierarchy — is difficult to navigate as text. A tree viewer renders the same data as an expandable/collapsible hierarchy where each branch represents an object or array and each leaf represents a primitive value. Color coding by type (string, number, boolean, null) adds another visual dimension for rapid scanning. This tool builds the tree entirely in your browser using DOM manipulation — no data is ever sent to a server.

How to use the JSON Tree Viewer?

  1. Paste your JSON into the input area on the left.
  2. The tree view renders automatically — showing objects as collapsible nodes, arrays as indexed lists, and values color-coded by type.
  3. Click the ▼ arrow next to any object or array to collapse/expand that branch.
  4. String values appear in green, numbers in orange, booleans in blue, and null in red for quick scanning.
  5. Use this to visually inspect deeply nested API responses, configuration files, or database exports.

Frequently Asked Questions

What is a JSON tree viewer?

A JSON tree viewer renders JSON data as a hierarchical tree where each key-value pair is a node. Objects and arrays are expandable/collapsible branches. This visual representation makes it easy to navigate deeply nested structures that would be hard to read as raw text.

Can it handle large JSON files?

Yes. The tree viewer renders nodes on demand and collapses deeply nested branches by default for performance. JSON files up to several megabytes can be visualized without lag.

What do the colors mean?

Colors indicate value types: green = string, orange = number, blue = boolean, red = null, and indigo = keys. This color coding lets you quickly identify data types without reading each value.

Is my data safe?

Yes. The tree is rendered entirely in your browser using JavaScript DOM manipulation. No data is sent to any server.