What is a JSON Tree Viewer?
A JSON tree viewer renders JSON data as a navigable, collapsible tree instead of flat text, using color to distinguish keys, strings, numbers, booleans and null values. It makes exploring large or deeply nested JSON — like API responses or config dumps — much faster than scrolling through raw text.
How to use this JSON viewer
- Paste your JSON into the left-hand box.
- Click View JSON to render it as a tree.
- Click the arrows to expand or collapse individual branches, or use Expand All / Collapse All.
Frequently asked questions
How is a JSON viewer different from a JSON formatter?
A formatter re-indents raw text so it's readable as text. A viewer renders the JSON as an interactive tree you can collapse and expand, which is much easier to navigate for deeply nested objects and long arrays.
Can I collapse deeply nested objects?
Yes — click the arrow next to any object or array to collapse or expand just that branch, or use the Expand All / Collapse All buttons to control the whole tree at once.
Is this useful for API responses?
Very — pasting a raw API response here lets you quickly drill into the field you care about without scrolling through minified text.