Free JSON Viewer Online (Tree)
Use this free JSON viewer to explore JSON as a collapsible tree. Fast, private, and works directly in your browser.
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What is JSON Viewer?
JSON Viewer renders JSON as an expandable, collapsible tree so you can navigate nested data quickly. It is useful for inspecting API responses and large config files. Everything runs in your browser.
How to use this tool
- Paste your JSON into the input box.
- Browse the tree that appears.
- Expand or collapse nodes as needed.
Features
- Collapsible tree view
- Expand and collapse nested nodes
- Shows arrays and object sizes
- Handles large JSON
- Runs entirely in your browser
This tool runs in your browser. Your files and text are not uploaded to our servers, and we do not store your input.
Frequently asked questions
Is my JSON uploaded?+
No. The tree is built entirely in your browser.
What if my JSON is invalid?+
You will see an error message so you can fix the syntax first.
Can it handle big files?+
Yes, though extremely large files depend on your device's memory.
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