Visualize objects, arrays, strings, numbers, and booleans in a nested tree.
JSON tools
JSON tree viewer — explore JSON in a collapsible tree
Turn raw JSON into an expandable tree in your browser—no upload.
Big JSON blobs hide structure behind braces and commas. A tree view shows objects, arrays, and values in place so you can scan keys, indices, and nested data without mentally parsing a wall of text.
Paste JSON on the left, click Parse tree, then use the chevrons to open or close branches. Copy formatted gives you pretty-printed JSON when you need it elsewhere.
JSON tree workspace
Structure you can fold, not a lecture.
Input
Tree
Parse JSON to see a collapsible tree here.
What you can do here
Structure you can fold, not a lecture.
Collapse noisy branches and expand only the path you care about.
Scan keys and array indices inline—no sideways scrolling through one long line.
Parsing happens in your tab; your JSON is not uploaded to our servers.
Nothing updates the tree until you click Parse tree, so drafts do not thrash the UI.
How to use it
Paste JSON into the left editor (from a file, API, or clipboard).
Click Parse tree. The right panel shows a collapsible tree.
Use chevrons to open or close branches; use Copy formatted for pretty-printed JSON.
What to expect
The viewer uses your browser’s JSON parser. Very large documents can slow the tab. Number precision follows JavaScript—extreme integers may need special handling elsewhere.
Quick sample
Want to try it? Paste this into the left panel and click Parse tree:
{"tool":"json-tree-viewer","version":1,"users":[{"id":1,"name":"Ada","roles":["admin","editor"]},{"id":2,"name":"Lin","roles":["viewer"]}],"meta":{"public":true,"flags":{"darkMode":false,"beta":null}}}Related pages
Quick question
Does my JSON get uploaded to your servers?
No. This tree viewer runs entirely in your browser. The text you paste is not sent to us to display it.