What is this tool?
Instantly detect and display your browser's viewport dimensions, screen resolution, User-Agent string, and hardware concurrency.
How to use
- Simply open the tool.
- The metrics are automatically detected and displayed.
- Resize your browser window to see real-time viewport updates.
Key Features
- Real-time viewport width/height detection
- Screen resolution and color depth parsing
- Detailed User-Agent breakdown
- Hardware concurrency (CPU cores) detection
Privacy First
Device information is read locally via standard web APIs and is never transmitted to our servers.