Paste valid JSON
Use an object or array from an API, log, or configuration file.
JSON tools
JSON Tree Viewer
Explore JSON in an interactive tree
Press Ctrl or Command and Enter to run the tool.
About this tool
About this tool
JSON Tree Viewer displays any valid JSON object or array as an expandable tree, allowing you to search keys and values and copy exact paths and values. The viewer operates locally in your browser and supports files up to 25 MB.
Paste JSON to navigate objects and arrays without losing context. Expand only the branches you need, search for keys or values, and copy exact JSONPath locations.
Built for daily work
- Inspect nested API responses.
- Find a configuration value in a large object.
- Copy paths for tests and mapping rules.
- Teach JSON structure using an interactive hierarchy.
How to use this tool
How to use this tool
Build the tree
Objects and arrays become collapsible branches while primitive values remain visible.
Search and copy paths
Find a key or value and copy the exact path for use in code or tests.
Key features
Key features
Expand and collapse individual branches
Open only the object or array subtrees you need. Expand-all and collapse-all buttons reset the view in one click.
Inline search across keys and values
Type to highlight matching nodes and step through them. The match counter shows how many hits remain.
Copy JSONPath and dot-notation accessors
Each node displays its path in both JSONPath style ($.store.books[0].title) and JavaScript bracket notation.
Large-structure navigation aids
Type icons distinguish strings, numbers, booleans, and nulls at a glance. Array lengths are shown inline so you can judge subtree size before expanding.
Practical use cases
Practical use cases
- Inspect nested API responses.
- Find a configuration value in a large object.
- Copy paths for tests and mapping rules.
- Teach JSON structure using an interactive hierarchy.
Private by default
For local tools, input is processed in your browser and is not sent to application analytics.
Data processing noticeTechnical details
Technical details
Path formatJSONPath style
InputStrict JSON object or array
ProcessingLocal browser processing
Maximum local file25 MB
Limitations and important notes
Limitations and important notes
- Very large expanded trees can use significant browser memory.
- Search is text based and does not support full JSONPath query syntax.
- Tree view is read only in this release.
Frequently asked questions
Frequently asked questions
The current tree is an inspection view. Use JSON Formatter code view to edit and rebuild the tree.
Array items use bracket indexes such as $.users[0].name.
No. Search only highlights matching tree rows.
Related guides and solutions
Related guides and solutions
JSON syntax and data type reference
A compact technical reference for writing and validating strict JSON that can be opened in standards-compliant parsers.
Learn moreHow to format and validate JSON correctly
A practical guide to indentation, syntax validation, key order, parser errors, and safe output review.
Learn moreWhat local browser processing means for online tools
A transparent explanation of local tool processing, temporary browser memory, local storage, downloads, analytics boundaries, and cases that require remote services.
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