JSON Tree Viewer
Paste JSON and explore it as a collapsible tree — fold any object or array, with colour-coded keys and values.
How it works
Your JSON is parsed locally and rendered as a nested tree of native collapsible nodes, with keys and values colour-coded by type.
100% client-side — nothing you paste is ever uploaded.
Frequently asked questions
How do I collapse a node?
Click any object or array node (the ▸ marker) to fold or unfold it, or use Expand all / Collapse all to do every node at once.
Is my JSON uploaded?
No — it's parsed and rendered entirely in your browser, so it's safe for sensitive data.