JSON Viewer
View, format, and explore JSON data with syntax highlighting and collapsible tree view
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Buy Ad Space – €70/30 daysWhat is JSON?
JSON (JavaScript Object Notation) is a lightweight data interchange format that's easy for humans to read and write, and easy for machines to parse and generate. It's become the standard format for APIs and web services.
JSON is commonly used for:
- API responses and requests
- Configuration files
- Data storage and exchange
- NoSQL database documents
JSON Viewer Features
- Syntax Highlighting Color-coded keys, strings, numbers, and booleans
- Collapsible Tree Click to expand/collapse nested objects and arrays
- Error Detection Instantly validates JSON and shows parsing errors
- 100% Private Files are processed locally - never uploaded
JSON Viewer FAQ
Does it validate my JSON?
Yes! If your JSON has syntax errors, the viewer will display a clear error message indicating what went wrong and where.
Can I view large JSON files?
The viewer supports files up to 20MB. For very large objects, only the first 100 items are shown at each level to maintain performance.
What about nested objects?
Deeply nested structures are fully supported. Click on any object or array to expand/collapse its contents. Nesting is supported up to 20 levels deep.
Is JSON5 or JSONC supported?
Currently, only standard JSON is supported. JSON5 (with comments and trailing commas) will show validation errors.