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 JSON Viewer Online

Explore JSON data in a clear, expandable tree. Upload a JSON file or paste JSON to search keys and values, inspect the structure and copy or download formatted data. Everything is processed locally in your browser.

JSON input
Drag & drop a JSON file here or click to browse (.json, .txt)
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Values
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Objects
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Arrays
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Max depth

⭐ JSON Viewer Online - Explanation and Examples

The JSON Viewer turns raw JSON into an expandable tree that is easier to scan than a wall of text. Open a JSON file or paste data to inspect nested objects, arrays, keys and values in your browser.

⭐ What Does This JSON Viewer Do?

  • Displays JSON objects and arrays as an expandable, nested tree.
  • Shows strings, numbers, booleans and null values with distinct labels and colors.
  • Searches JSON keys and values, keeping matching branches visible.
  • Reports the number of values, objects, arrays and maximum nesting depth.
  • Expands or collapses the tree so you can focus on the relevant structure.
  • Copies formatted JSON or downloads it as a .json file.
  • Reads pasted input and uploaded files entirely in your browser.

⚙️ How to View a JSON File

  1. Drag a JSON file onto the upload area, click to browse, or paste JSON into the input.
  2. The viewer validates the input and displays valid JSON as an expandable tree.
  3. Click an object or array row to expand or collapse its children.
  4. Search for a key or value, or use Expand all and Collapse all to change the tree view.
  5. Copy the formatted JSON or download the data as a JSON file.

🔎 Example: Nested JSON Data

JSON input:

{
  "user": { "name": "Ada", "active": true },
  "scores": [98, 87, 92],
  "note": null
}

The viewer presents user as an object, scores as an array, and labels each value by type. Expand the object or array to inspect its contents without losing track of the surrounding structure.

🔎 Search and Structure Statistics

Enter a word such as active or Ada in the search box to find matching keys and values. The viewer keeps the matching path visible. The summary counts all values, objects and arrays and reports the deepest level in the JSON structure.

⚠️ Tips for Best Results

  • JSON property names and string values must use double quotes.
  • Remove trailing commas and comments; standard JSON does not support them.
  • If the viewer reports invalid JSON, check the error and validate brackets, quotes and commas.
  • Large JSON files can take longer to render and use more browser memory.

⭐ Private, Browser-Based JSON Viewing

The JSON Viewer parses and displays your data locally in your browser. Your JSON file is not uploaded to a server or stored by this tool.

This tool is also known as

  • json viewer online
  • view json file in browser
  • json tree viewer tool
  • open and browse json data
  • online json file reader

Frequently Asked Questions

A JSON viewer displays JSON data in a readable structure. This viewer shows objects and arrays as an expandable tree so you can explore nested keys and values.

Drag and drop a .json file onto the upload area, click the area to browse for a file, or paste JSON text into the input box.

Click an object or array row in the tree to expand it and see its child values. Use Expand all or Collapse all to change the whole tree.

Yes. Enter a key or value in the search field. Matching keys and values are highlighted and their parent branches remain visible.

It identifies objects, arrays, strings, numbers, booleans and null values with distinct type labels.

JSON requires double-quoted property names and strings, valid commas and matching braces or brackets. Comments and trailing commas are not allowed in standard JSON.

Yes. Click Copy to place the valid JSON in an indented, formatted form on your clipboard.

Yes. Click Download .json to save the formatted data as data.json.

Values counts every JSON value, including containers and primitives. Objects and Arrays count their respective containers, and Max depth reports the deepest nesting level below the root.

No. The file is read and parsed locally in your browser. The JSON data is not sent to or stored on the server.

Yes. This browser-based JSON viewer works without installing an application. Open the page in a modern browser and paste or upload the file.

The viewer can process JSON files that fit in your browser memory. Very large or deeply nested files may take longer to parse and display.

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