Runs 100% in your browser — nothing is uploaded
JSON & Data Formats

JSON Tree Viewer

Explore large JSON documents as a collapsible tree with type badges, path copying, and expand/collapse controls.

JSON Tree Viewer
Client-side

About this tool

The JSON Tree Viewer renders any JSON document as an interactive, collapsible tree instead of a flat block of indented text — making it far easier to navigate deeply nested API responses, config files, or log payloads without losing your place. Each node shows its key, a type badge (string, number, boolean, null, object, or array), and a short preview of its value, with an expand/collapse arrow for anything that has children.

Nodes deeper than two levels start collapsed by default, so you see a manageable overview of the document's top-level shape first and drill into the parts you actually care about, rather than being confronted with a fully expanded wall of nested data. Collapse All and Expand All buttons let you jump between the overview and a fully unfolded view instantly. Hovering any node reveals a Copy Path button that copies its JSONPath-style location (like $.user.address.city) — useful for pulling the exact path you need into code, a JSONPath expression, or a bug report.

A header summary ("N nodes, depth D") gives you a quick sense of how large and how deeply nested the document is before you start exploring. This is a different tool from the JSON Formatter: the formatter outputs fully expanded indented text for reading or copying as a whole, while the tree viewer is built specifically for interactively navigating large or unfamiliar JSON structures. Everything renders and updates locally in your browser — the document is never uploaded.

FAQ

Why do deep nodes start collapsed?
Nodes deeper than two levels are collapsed by default so that opening a large document shows a manageable top-level overview rather than an overwhelming, fully expanded wall of data. You can drill into any branch by clicking its expand arrow, or use Expand All to unfold everything at once.
What does the Copy Path button copy?
It copies a JSONPath-style string identifying that node's exact location in the document, such as $.user.address.city or $.items[2].sku. This is useful for referencing the exact field in code, in a JSONPath expression, or when describing a specific value in a bug report.
What do the type badges mean?
Each node shows the JSON type of its value — string, number, boolean, null, object, or array — as a small badge next to the key. This makes it immediately clear, without reading the raw value, whether a field is a nested structure you can expand or a leaf value.
How is this different from the JSON Formatter?
The JSON Formatter outputs fully expanded, indented text meant for reading top-to-bottom or copying as a whole document. The Tree Viewer is built for interactive exploration — collapsing and expanding specific branches, previewing values, and copying paths — which is more useful for large or unfamiliar JSON where you need to navigate rather than read linearly.
Is there a size limit for the JSON I can explore?
No hard limit is enforced, but very large documents (tens of thousands of nodes) may take a moment to render as a tree, since the whole structure is walked and rendered as React state in your browser tab.