// output appears hereJsonic's JSON Viewer lets you paste any JSON and instantly visualize it as formatted code or a collapsible tree. Use Tree view to expand and collapse nested objects and arrays, making it easy to explore deeply nested API responses. Use Code view to read syntax-highlighted JSON with line numbers. Click Format first to pretty-print your JSON before switching to the tree view. All processing happens in your browser — your JSON is never uploaded.
How to view JSON online
- Paste your JSON into the left panel.
- Click Format to pretty-print the JSON.
- Click Tree to switch to the collapsible tree view.
- Expand or collapse any node to explore nested data.
FAQ
What is the Tree view?
Tree view renders your JSON as an expandable/collapsible hierarchy, showing the structure of nested objects and arrays. Each node displays its key, type, and value at a glance.
Can I view large JSON files?
Yes. The viewer handles large JSON documents. For very large files (tens of MB), performance depends on your device, but typical API responses and config files work instantly.
Is my JSON data uploaded?
No. The JSON Viewer runs entirely in your browser. Your data never leaves your device.
Can I edit JSON in the viewer?
Yes — the input panel is fully editable. Make your changes, then click Format to re-parse and view the updated structure.
How is this different from a JSON formatter?
A JSON Viewer emphasizes reading and exploring JSON structure, especially using the tree view. A formatter focuses on pretty-printing with consistent indentation. This tool does both.
Can I collapse all nodes at once?
The tree view shows the full expanded structure after formatting. You can collapse individual nodes by clicking on them.