JSON Tree Viewer
Visualize JSON structure as an indented tree — see nested objects and arrays at a glance. Collapse deep branches to navigate large payloads — free, local, no signup.
How to Use the JSON Tree Viewer
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Frequently Asked Questions
What does the tree view show?
JSON structure as an expandable/collapsible tree with nested objects, arrays, and leaf values. Colors distinguish keys (strings), numbers, booleans, and null values.
Can I expand and collapse branches?
Yes. Click any object or array node to expand or collapse it. This helps navigate large JSON documents by hiding irrelevant branches.
Can I copy values from the tree?
Yes. Click on any leaf value to copy it to clipboard. The tree preserves the full path for context.
Does it validate the JSON?
Yes. If the JSON is malformed, the viewer shows an error with the line number and position of the syntax issue.
When using JSON Tree Viewer, is my JSON data stored?
No. All visualization happens locally in your browser. No JSON data is sent to any server.
How are arrays and empty values drawn?
Indent is 2 spaces per depth; array items print as [0]: ... lines, empty arrays as [], empty objects as {}, null as null and strings quoted. The default document nests address {city, zip} and hobbies [reading, coding] to show both.
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Last updated October 2026