View JSON online in a collapsible tree. Paste any JSON and explore it interactively: expand and collapse nested objects and arrays, filter by key or value, and switch to a formatted view or structure statistics. Everything runs 100% client-side in your browser, so your data never leaves your device.
100% client sideInstant resultNo data sent
Input JSON
Output
Paste JSON to format, beautify, validate, minify, analyze, or view it as a tree.
0 input chars0 output charsWaiting for valid JSON
Frequently asked questions
4 answers
A JSON tree viewer displays JSON as an interactive, collapsible tree instead of a flat wall of text. Each object and array becomes a node you can expand or collapse, so you can drill into deeply nested data one level at a time. It is the fastest way to understand the shape of an unfamiliar API response: collapse everything, then open only the branches you care about.
Paste the JSON (or upload the file) and switch to tree view. Nested nodes start collapsed, so even a very large document renders quickly and stays responsive: you only expand the branches you need instead of rendering thousands of lines at once. For a quick overview of a big file, the stats view summarizes the structure, key counts, and depth without any scrolling.
Yes. The tree view includes a filter box, so you can type a key name or value and jump straight to the matching nodes instead of expanding branches by hand. This is especially useful in large API responses where the field you need is buried several levels deep.
No. The viewer runs entirely in your browser using client-side JavaScript. Your JSON is never uploaded, logged, or sent to any server, and you can disconnect from the internet after the page loads and keep working. That makes it safe for production API responses, tokens, customer data, and anything else you would not paste into a server-backed tool.
Reading raw JSON is hard: a single API response can contain hundreds of nested objects, and scrolling through formatted text tells you little about the overall shape. This JSON viewer online tool turns any JSON document into an interactive tree, so you can collapse everything to see the top-level structure, then expand exactly the branch you need. The filter box finds keys and values buried deep in the hierarchy, the formatted view gives you clean indented text for copying, and the stats view summarizes keys, depth, and value types at a glance. Free, instant, and 100% client-side, it is a safe way to inspect production payloads, debug webhooks, and explore unfamiliar APIs.