JSON Tree
Turn JSON into an expandable tree so you can see its structure and hierarchy at a glance.
Example
The tree view shows how your JSON nests — each object and array is a branch you can open or close, making it easy to understand the shape of unfamiliar data.
How it works
Your JSON is parsed and rendered as a hierarchical tree. Each level is indented and bordered, and every object or array can be expanded or collapsed independently.
Good to know
JSON Tree converts pasted JSON into an interactive, indented tree where every object and array becomes a branch you can open or close. Instead of scanning a long, flat block of text, you see the shape of the data — which keys hold nested objects, which hold arrays, and how deep the structure goes. It is aimed at developers, QA testers and anyone reading API responses, config files or webhook payloads who needs to understand structure rather than edit values.
Reach for it when you are working with an unfamiliar or deeply nested payload — for example mapping out a third-party API response before writing the code that consumes it, or confirming that an array of records all share the same fields. Because each branch collapses independently, you can fold away the parts you do not care about and drill into a single nested path without losing your place in a large document.
Read the tree top-down: the outermost bracket is the root, indentation and borders mark each deeper level, and a collapsed node is a folded branch you can click to reveal its children. Use Collapse all first to get a high-level outline of the top-level keys, then expand only the branch you are investigating. A quick way to verify list consistency is to expand the first and last items of an array and check that their key sets match.
One practical note: the tree is for inspecting and navigating structure, not editing it — if you need to change values, copy minified or escaped output, or fix syntax errors, use a sibling tool such as the JSON Editor or JSON Parser. Everything here runs entirely in your browser, so even large or sensitive payloads stay on your device, but extremely large files may render slowly because every node is drawn at once; collapsing branches you do not need keeps the view responsive.
Frequently asked questions
How is this different from the JSON Viewer?
They share the same engine — 'tree' emphasises structure and hierarchy, which is handy when mapping out an unfamiliar API response.
Can I collapse everything at once?
Yes — use Collapse all to fold every node, then expand just the branches you need.
Is my JSON uploaded anywhere?
No — everything runs in your browser with JavaScript. Your data never leaves your device, so it's safe for sensitive payloads and works offline once loaded.
Is this tool free?
Yes, completely free with no sign-up and no limits.
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People also ask
What is a JSON tree view?
A JSON tree view displays JSON as a hierarchy of expandable and collapsible nodes instead of plain text. Each object and array appears as a branch you can open to reveal its keys, values and nested children, making the overall structure easy to read at a glance.
How do I view nested JSON in a tree?
Paste your JSON into the tool and it parses it into an indented tree automatically. Click any object or array node to expand or collapse it, so you can drill down into nested branches one level at a time.
What is the difference between a JSON tree and a JSON formatter?
A formatter (pretty-printer) re-indents JSON but keeps it as scrollable text, while a tree view turns it into clickable, foldable nodes. The tree is better for navigating and understanding structure; a formatter is better for producing clean text to copy or commit.
Can I expand or collapse all nodes at once?
Yes. You can collapse every node to see just the top-level outline, then expand individual branches as needed, or expand them all to view the full structure at once.
Is it safe to paste sensitive JSON into an online tree viewer?
With this tool it is, because parsing and rendering happen entirely in your browser using JavaScript and the data is never uploaded to a server. As a general rule, only paste sensitive payloads into tools that explicitly process data client-side.
Why does my JSON fail to load in the tree viewer?
The most common cause is invalid JSON — trailing commas, single quotes instead of double quotes, unquoted keys, or comments, none of which are valid JSON. Validate or fix the syntax with a parser first, then load it into the tree.
Does a JSON tree viewer work offline?
Once the page has loaded in your browser, a fully client-side tree viewer like this one continues to work without an internet connection because all processing runs locally in JavaScript.
Can I edit values in a JSON tree view?
This tree view is built for reading and navigating structure rather than changing data. To modify values or output, use a dedicated JSON editor or related conversion tool instead.