JSON Tree Viewer
Visualize JSON as an interactive collapsible tree. Paste your JSON:
Visualize JSON Structure
The JSON Tree Viewer transforms raw JSON text into an interactive tree structure. Click on nodes to expand or collapse them, making it easy to navigate complex nested data.
How to Use
- Paste your JSON in the left panel
- Click "View Tree" to generate the visualization
- Click nodes to expand/collapse sections
- Use Expand All / Collapse All buttons for quick navigation
Color Legend
| Color | Type | Example |
|---|---|---|
| Red | Keys (property names) | "name" |
| Green | Strings | "hello" |
| Blue | Numbers | 42 |
| Purple | Booleans & null | true, null |
| Gray | Brackets & structure | { }, [ ] |
Why Use a Tree View?
- Navigate complex data — Collapse irrelevant sections to focus on what matters
- Understand structure — See the hierarchy at a glance without counting brackets
- Debug APIs — Quickly find nested fields in API responses
- Learn JSON — Visual representation helps beginners understand JSON structure
Node Information
Each collapsible node shows a summary when collapsed:
Object{3}— Object with 3 propertiesArray(5)— Array with 5 elements
The statistics bar shows total counts of objects, arrays, and primitive values.
Tree View vs Text View
| Feature | Tree View | Text View |
|---|---|---|
| Navigation | Click to expand/collapse | Scroll through text |
| Large files | Better (collapse sections) | Harder to navigate |
| Editing | View only | Edit directly |
| Copy/paste | Paste input, view output | Copy any section |
Tips for Large JSON
- Use Collapse All first, then expand specific sections
- Look at the stats to understand the data size
- For very large files (1MB+), consider using a dedicated JSON viewer application
Related Tools
- JSON Validator — Validate and format JSON
- JSON Pretty Print — Format as indented text
- JSON Path — Query specific values
- JSON to Table — View as spreadsheet
Frequently Asked Questions
Can I edit JSON in the tree view?
The tree view is read-only for visualization. Edit your JSON in the left panel and click "View Tree" to update the visualization.
Why do some nodes not expand?
Empty objects {} and arrays [] have no children to expand. The node displays without an expand arrow.
Is there a size limit?
The tool runs in your browser, so very large JSON (several MB) may cause performance issues. For huge files, consider using desktop tools or command-line utilities like jq.