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JSON Tree Viewer icon

JSON Tree Viewer Online

Explore JSON objects and arrays in an interactive expandable tree. Validate nested data, inspect values, copy formatted JSON, or download a JSON file directly in your browser.

100% FreeNo Signup RequiredBrowser-Based
Privacy note: JSON parsing and tree rendering are performed in your browser. Do not enter passwords, private keys, payment data or other confidential information into any online tool.
📁 Drop a JSON file here or click to choose a .json file
JSON Input
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Interactive JSON Tree
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JSON Tree Viewer Online

This free JSON Tree Viewer helps developers, students, analysts, and technical users inspect structured JSON without scrolling through a long block of text. Paste a JSON object or array, render it as a visual hierarchy, and expand or collapse nested levels to find the property or value you need.

Use it as a JSON viewer online, JSON tree explorer, or a convenient way to inspect an API response. Objects, arrays, strings, numbers, booleans, and null values are displayed with clear visual distinctions. The browser-based workflow is useful when checking JSON from APIs, configuration files, web development projects, and data exchange tasks.

How to Use the JSON Tree Viewer

  1. Paste valid JSON into the input box or drag a .json file onto the upload area.
  2. Click Render JSON Tree to validate and display the data as an expandable hierarchy.
  3. Click the arrows beside objects and arrays to expand or collapse nested JSON.
  4. Use Expand All or Collapse All when working with larger JSON responses.
  5. Copy the formatted JSON or download a new .json file when you are finished.

Explore Nested JSON, Arrays, and API Responses

A JSON tree view is especially useful for large API responses where nested objects and arrays can be difficult to scan in raw text. Instead of searching through one long JSON document, you can open only the branches that matter. This makes the tool useful for debugging API data, checking configuration JSON, reviewing web-service responses, and understanding unfamiliar JSON structures.

Key Features

  • Interactive expandable and collapsible JSON nodes.
  • Nested objects and arrays, including arrays of objects.
  • Clear visual values for strings, numbers, booleans, and null.
  • JSON validation with readable browser-side error status.
  • JSON file upload with drag and drop.
  • Formatted JSON copy and .json download.
  • Responsive layout for desktop, tablet, and mobile browsers.
  • No account required for the core browser-based viewer.

Frequently Asked Questions

What is a JSON Tree Viewer?
A JSON Tree Viewer turns a JSON object or array into an interactive hierarchy. You can expand and collapse nested levels instead of reading the entire JSON response as one long block of text.
Can I view nested JSON and arrays?
Yes. The viewer handles nested objects, arrays, arrays of objects, strings, numbers, booleans, and null values.
Can I use this JSON viewer for API responses?
Yes. You can paste a JSON API response into the viewer to inspect its nested fields and values in a collapsible tree.
Can I upload a JSON file?
Yes. You can select a .json file or drag it onto the upload area. The file is read in your browser and rendered as a tree.
Can I copy and download the JSON?
Yes. After valid JSON is rendered, use Copy Formatted JSON or Download .json.
Is the JSON uploaded to a server?
The tool parses and renders the JSON in the browser. For safety, avoid entering passwords, private keys, payment information, or other highly confidential data into any online tool.