Free Online JSON Tree Viewer
Explore deeply-nested JSON as a collapsible tree and an interactive mind map, so structure and relationships are clear at a glance.
No sign-up to start · Runs in your browser
How to view JSON
- 1
Paste your JSON
Add the JSON you want to explore into the editor; it is validated instantly.
- 2
Switch to Tree or Mind Map
Use the Output tab for a collapsible tree, or the Mind Map tab for a color-coded visual graph.
- 3
Navigate & focus
Expand only what you need, or click a node to highlight the matching JSON in the editor.
Why explore with JSON Copilot
Collapsible tree view
Expand level by level, with type-aware coloring for keys and values.
Interactive mind map
See the entire structure as a graph, color-coded by data type, with multiple layouts.
Two-way highlighting
Click a node or field and the match lights up across the editor and views.
Handles large data
Built to navigate big, deeply-nested documents.
Frequently asked questions
How do I view nested JSON clearly?
Paste it and switch to the tree view to expand levels one at a time, or the mind map to see the whole structure visually. Both make deep nesting easy to follow.
What is the JSON mind map?
It is an interactive graph of your JSON where each node is color-coded by type (object, array, string, number, boolean). You can pan, zoom, and rearrange it.
Is the viewer free and private?
Yes. The tree view runs entirely in your browser for free. The mind map is available after a free sign-up, with node limits that scale by plan.