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JSON Tree Viewer
JSON & Data Format · Free Online Tool
Browse large JSON in a collapsible tree structure.
By CoderNewbie Team
28 nodes
Success
398 chars
click to expand / collapse
"app":"CoderNewbie"string
"version":1number
"active":trueboolean
"count":42number
"tools"string
"developer"string
"json"string
]
"host":"localhost"string
"port":5432number
"ssl":falseboolean
"timeout":30number
"retries":3number
}
}
"id":1number
"name":"Alice"string
"admin"string
"editor"string
]
}
"id":2number
"name":"Bob"string
"viewer"string
]
}
]
}
Collapse Any Node
Click any object or array to fold it out of view.
Live Filter
Type to keep only branches whose keys match your query.
Type Colors
Strings, numbers, booleans, and null each get a color.
How to Use JSON Tree Viewer
- 1Paste your input data (JSON, CSV, XML, YAML, etc.) into the input field.
- 2The tool automatically processes and validates your data.
- 3Review the converted output in the result panel.
- 4Copy or download the converted result.
Features
- ✓100% free — no signup, no subscription, no ads
- ✓Runs entirely in your browser — data never leaves your device
- ✓Fast and lightweight — instant results
- ✓Cross-platform — works on desktop, tablet, and mobile
Frequently Asked Questions
Can I convert large JSON files?
Yes, but performance depends on your browser. Files up to 10MB are generally handled well.
Do you validate the input?
Yes, most tools validate input and show error messages with line numbers for invalid data.
Can I download the converted result?
Yes, most conversion tools provide a download button for the output file.
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Understand the programming ideas behind this tool.