Free Online JSON Viewer & Explorer
Free online JSON Viewer to explore and visualize JSON data in a collapsible tree structure. Paste, expand, and copy JSON values instantly. No signup required.
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What is JSON Viewer?
JSON Viewer is a free online tool that helps you visualize and explore JSON (JavaScript Object Notation) data in a clear, hierarchical tree structure. Instead of looking at raw JSON text, you can see your data organized with collapsible nodes, making it easy to navigate complex nested structures. Perfect for developers, data analysts, and anyone working with JSON APIs or configuration files.
How to Use JSON Viewer
- Paste your JSON data into the input area on the left
- The tree view will automatically appear on the right
- Click on any object or array to expand/collapse its contents
- Use the copy button to copy any value or the entire JSON
JSON Viewer Features
- Instant JSON parsing and validation
- Collapsible tree view for easy navigation
- Color-coded data types (strings, numbers, booleans, null)
- Copy individual values or entire objects
- Sample JSON data to get started quickly
JSON Viewer FAQ
Is my JSON data secure?
Yes! All JSON processing happens directly in your browser. Your data never leaves your device and is not sent to any server.
What's the maximum JSON size I can view?
There's no strict limit, but very large JSON files (over 10MB) may slow down your browser. For best performance, we recommend keeping JSON under 5MB.
Can I edit the JSON in the tree view?
Currently, JSON Viewer is read-only. For editing JSON, please use our JSON Formatter tool which allows you to modify and format JSON data.