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JSON Viewer

Interactive tree view for exploring complex JSON data

82 visits

JSON Viewer parses your JSON and renders it as an interactive, collapsible tree, making it easy to explore deeply nested objects and arrays without scrolling through a wall of raw text.

Paste your JSON here

How to use JSON Viewer

  1. 1

    Paste your JSON into the input box.

  2. 2

    The parsed structure renders instantly as a tree.

  3. 3

    Expand or collapse any object or array branch.

  4. 4

    Fix the error shown if your JSON doesn't parse.

Everything you need to know about exploring JSON as a tree

What does this do differently from a formatter?

Instead of printing indented text, this renders JSON as a collapsible tree — expand and collapse individual objects and arrays, which makes navigating a deeply nested API response far easier than scrolling through hundreds of lines of flat text.

When you actually need this

  • Exploring a large, deeply-nested API response without scrolling through everything at once.
  • Finding a specific field buried several levels deep in a complex object.

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Frequently Asked Questions

Does this tool send my JSON to a server?

No — parsing and rendering happen entirely in your browser using JSON.parse; nothing you paste is ever transmitted or stored.

What happens if my JSON is invalid?

The exact parse error message is shown instead of a tree, so you can see precisely what's wrong rather than getting a generic failure.

How is this different from the JSON Formatter?

Formatter outputs reformatted text you copy elsewhere; Viewer renders an interactive, expandable/collapsible tree for exploring structure in place, which is better for large or deeply nested JSON.

Is there a size limit on the JSON I can view?

There's no artificial limit, though extremely large JSON documents may be slower to render as a tree since everything happens in your browser.

Is this tool free to use?

Yes — completely free, with no signup and no usage limits for casual use.