JSON Tree Viewer
Explore JSON as an interactive collapsible tree — all in-browser
JSON Input
Tree View
About the JSON Tree Viewer
This JSON tree viewer renders JSON as a collapsible tree so deeply nested structures can be explored branch by branch. Collapsing the parts you do not need is what makes a large API response navigable.
A JSON tree viewer solves a problem formatting alone does not. Indenting a large response makes it readable but also enormous — a few hundred lines where the field you want is buried at depth six. A tree lets you collapse everything irrelevant.
It is the fastest way to understand an unfamiliar API. Collapse to the top level to see the overall shape, then expand only the branch you care about. Array lengths and object key counts are visible without expanding, which tells you the size of what you are looking at.
Because rendering happens in your browser, production API responses can be explored without pasting customer data into a hosted service. For validation and error reporting rather than exploration, the JSON formatter is the better tool.
How to use the JSON Tree Viewer
- Paste your JSON. Enter the response or document.
- Collapse to the top level. See the overall structure without the detail.
- Expand the branch you need. Drill into just the part you care about.
- Copy a value or path. Take what you need from the tree.
JSON Tree Viewer features
- JSON rendered as a collapsible tree
- Collapse to the top level to see overall shape
- Expand only the branch you need
- Array lengths and object key counts shown without expanding
- Copy a value from the tree
- Runs in your browser; API responses are not uploaded
Frequently asked questions
How is a tree view better than formatted JSON?
Indenting a large response makes it readable but also enormous — several hundred lines with the field you want at depth six. A tree lets you collapse everything irrelevant, so the structure stays on one screen.
What is the fastest way to understand an unfamiliar API response?
Collapse to the top level to see the overall shape, then expand only the branch you care about. Array lengths and key counts are visible while collapsed, so you know how big something is before opening it.
Can it handle deeply nested documents?
Yes, there is no depth limit — nesting is exactly what the view is for. Very large documents are bounded by browser memory rather than by the tool.
Should I use this or the JSON formatter?
This one for exploring a structure you do not yet understand. The formatter for validation and error positions when the document will not parse.
Is my JSON uploaded?
No. Rendering happens in your browser, so a production API response can be explored without pasting customer data into a hosted service.