JSON Tree Viewer Online
The best JSON visualizer online. Explore large API responses with an interactive, searchable JSON tree view for faster debugging.
JSON Source
Built With Care
“This viewer uses recursive rendering with collapse/expand controls and real-time search. It handles nested objects and arrays up to several megabytes without sending your data to any server.”
JSON Tree Viewer
Paste JSON and explore it as a collapsible tree. Click to expand or collapse nodes, search for keys, and see value types at a glance. Good for inspecting large API responses or config files.
- 1Paste your raw JSON code into the left-hand 'JSON Source' editor.
- 2If the JSON is valid, the 'Tree View' on the right will automatically populate.
- 3Click the arrows next to objects and arrays to expand or collapse nested levels.
- 4Use the search box to highlight specific keys or values across the whole data structure.
- 5Hover over any value to reveal an individual 'Copy' button for that specific data point.
- Dynamic Navigation: Effortlessly drill down into deeply nested API responses.
- Real-time Search: Instant item highlighting for rapid discovery in massive JSON files.
- Type Highlighting: Visual color-coding for strings, numbers, and booleans for clarity.
- Performance Driven: High-efficiency tree rendering capable of handling large payloads.
- Interactive Tree: Expand, collapse, and search nested JSON structures in real time.
Real Ways People Use This
API Debugging
Quickly visualize REST or GraphQL API responses to understand nested data relationships and spot errors.
Data Exploration
Navigate large JSON configuration files or database exports with collapsible branches and search highlighting.
Education & Learning
Learn JSON structure by interactively expanding and collapsing objects and arrays in real time.
- Very large JSON files (10MB+) may slow down rendering. Break them into smaller chunks for best performance.
- The search function highlights matches but does not auto-expand collapsed branches containing matches.
- 1Validate your JSON is well-formed before pasting to avoid parse errors.
- 2Use the search feature to quickly locate specific keys or values in large structures.