What is a JSON tree viewer?

A JSON tree viewer renders your JSON as a collapsible tree so you can explore its structure visually. Each key/value and array item becomes a node you can expand or collapse, which is far easier to read than raw JSON for large or deeply nested data.

How do I expand or collapse the tree?

Click any node to toggle it open or closed. Use the "Expand all" and "Collapse all" buttons to open or close the entire tree at once — handy for jumping between a high-level overview and the details.

Can I copy a single value from the tree?

Yes. Hover over any node and click the copy icon to copy that value to your clipboard. For a branch (a object or array), it copies the whole subtree; for a leaf it copies just that value.

Does it handle large or deeply nested JSON?

Yes. Collapsed branches aren't rendered until you open them, so even large JSON stays responsive. Deeper levels start collapsed so you see the overall shape first, then drill into the objects, arrays and values you care about.

Is my JSON data private?

Completely. Parsing and rendering happen entirely in your browser — your JSON is never uploaded or sent to a server. There's no sign-up, and it works offline once the page has loaded.

JSON Viewer - Online JSON Tree Viewer & Explorer

JSON Viewer — Explore JSON as an Interactive Tree

Paste any JSON and explore it as a collapsible tree instead of squinting at raw text. Every object, array and value becomes a node you can expand, collapse, search and copy — making large or deeply nested JSON (API responses, config files, log payloads) easy to navigate. Parsing follows the ECMA-404 JSON standard and runs entirely in your browser — your data is never uploaded.

Features

✅ Tree explorer — click to expand/collapse objects and arrays
✅ Search by key or value — filter and highlight matches instantly
✅ Expand all / Collapse all — toggle the whole tree in one click
✅ Hover to copy — copy any value, or a whole subtree, from the copy icon
✅ Type-aware colors — strings, numbers, booleans and null at a glance
✅ 100% private — parsed and rendered entirely in your browser, no upload, no signup

Common use cases

Inspect a REST/GraphQL API response and copy a single field or nested object
Read a large package.json, tsconfig.json or cloud config without scrolling
Debug a webhook or log payload by searching for a key or value
Compare structure while learning JSON or preparing for an interview

Why this JSON viewer

Unlike viewers that upload your data or hide search behind a paywall, everything here happens client-side and stays free with no sign-up. The same searchable tree works across XML, YAML and TOML, so you learn one tool for every data format. Search matches both keys and values and highlights them in place — handy when you only know part of what you're looking for.

How to use

Paste or type JSON into the editor on the left.
Explore the tree on the right — click nodes, search, or use Expand all / Collapse all.
Hover any value and click the copy icon to copy it.

Related tools

XML Viewer — explore XML as a tree
YAML Viewer — explore YAML config as a tree
TOML Viewer — explore TOML config as a tree
JSON Formatter — beautify and validate JSON
JSON to YAML — convert JSON to YAML
Universal Code Editor — edit & run code in 25+ languages

JSON Viewer OnlineJSON ViewerJSON

Explore JSON as an interactive tree — expand, collapse & copy any value