JSON Visualizer / JSON Viewer
Visualize, format, and validate your JSON data with this free online tool. Convert raw JSON strings into a readable, collapsible tree structure for easy debugging.
About
JavaScript Object Notation (JSON) is the backbone of modern web data interchange. While machines parse minified JSON effortlessly, humans often struggle to read raw strings devoid of formatting. This JSON Visualizer bridges that gap by transforming raw text into an interactive, collapsible tree.
Developers and data analysts use this tool to verify API responses, debug configuration files, and ensure data integrity. By visualizing the structure, you can quickly identify nesting errors, incorrect data types, or missing keys that might break your application.
Formulas
The visualization process follows a recursive parsing algorithm to map the text string into a Document Object Model (DOM) tree.
- Step 1: Parsing. The raw string is processed using the native
JSON.parse()method to check for syntax errors. - Step 2: Traversal. The script iterates through keys and values. If a value is an Object or Array, a collapsible container is created.
- Step 3: Rendering. Primitive values (Strings, Numbers, Booleans) are color-coded for instant recognition.
This approach ensures that even deeply nested structures are rendered accurately without performance loss.
Reference Data
| Data Type | Description | Visual Indicator |
|---|---|---|
| Object | Unordered set of key/value pairs enclosed in braces {}. | {} (Collapsible) |
| Array | Ordered list of values enclosed in brackets []. | [] (Collapsible) |
| String | Sequence of characters. | "text" |
| Number | Integer or floating-point. | 123 |
| Boolean | True or False values. | true |
| Null | Empty value. | null |