What is JSON Tree Viewer?
JSON Tree Viewer helps you browse and explore JSON data in an intuitive tree structure. Whether you are debugging API responses, inspecting config files, or analyzing complex data structures — the tree view makes hierarchy relationships easy to understand. Supports node collapse/expand, syntax highlighting (strings, numbers, booleans, null in different colors), and path copying. All processing runs locally in your browser — your JSON data is never uploaded.
Use Cases
- ◆API response data debugging
- ◆Config file structure inspection
- ◆Complex JSON data analysis
- ◆JSON data teaching and demos
- ◆Quick JSON structure viewing during development
How to Use
- 1Paste or type your JSON data
- 2Click parse
- 3Browse data in the tree view
- 4Collapse/expand nodes, copy paths
Features
- ✓Free
- ✓Tree structure display
- ✓Node collapse/expand
- ✓Syntax highlighting
- ✓Path copying
- ✓Browser-based
FAQ
Can I expand/collapse nodes?
Yes. Click any object or array to toggle expand/collapse. Useful for navigating large JSON structures.
Does it validate JSON?
Yes. Invalid JSON shows a syntax error with line number. Valid JSON displays the interactive tree.
Can I search within the JSON?
Yes. Use Ctrl+F (Cmd+F on Mac) to search for keys or values in the tree view.
What is the maximum file size?
Up to 20MB. Larger files may cause rendering performance issues in the browser.
Do I need to be online?
You need the internet to load the page the first time. After that, it works offline.