How big a file can it open?

Large ones. Only expanded branches are rendered, so a file with hundreds of thousands of values still opens instantly.

What does the path look like?

JavaScript style: $.users[0].address.city, with ["odd key"] for keys that contain spaces or symbols.

No. Everything happens in this tab.

Explore JSON as a collapsible tree. Expand what you need, search keys and values, and click any value to copy its path. Runs in your browser.

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Two users; clicking the email of the first and the first-name of the second copies these paths. Keys with a dash need bracket notation.

json

{"users":[{"email":"ada@example.com"},{"first-name":"Grace"}]}

copied paths

$.users[0].email
$.users[1]["first-name"]

Dot notation for odd keys
Keys with spaces, dashes or starting with a digit need brackets: $.user["first-name"], not $.user.first-name.
Counting from one
Arrays are zero-indexed: the first item is [0], the third is [2].
Mixing path styles
Paths here are JavaScript style ($.a[0].b). jq writes the same path as .a[0].b: drop the $.
Searching with one letter
Search starts at two characters, so a single letter doesn’t filter the tree.

1
Paste or open your JSON
API responses, logs, configs: anything valid. Large files stay fast because only open branches are drawn.
2
Expand and search
Open branches one by one, or expand everything. Search highlights matching keys and values and opens the way to them.
3
Copy paths and values
Click a row to copy its path, like $.users[0].email, ready for code or jq-style tools.

How big a file can it open?: Large ones. Only expanded branches are rendered, so a file with hundreds of thousands of values still opens instantly.
What does the path look like?: JavaScript style: $.users[0].address.city, with ["odd key"] for keys that contain spaces or symbols.
Is my JSON sent anywhere?: No. Everything happens in this tab.