Browser Window & Screen Resolution Checker
Shows your current browser viewport size and screen resolution.
Lilu Baba's Window & Screen Resolution Checker reads your browser's viewport size, screen resolution and device pixel ratio directly — useful for responsive design testing.
How to use this tool
- Your browser viewport size and screen resolution are detected automatically below.
- Resize your window and click into the page to refresh.
FAQ
Browser Window & Screen Resolution Checker — frequently asked questions
Viewport is your browser window's visible content area; screen resolution is your full monitor's pixel dimensions.
No — it's read and displayed entirely in your browser using standard JavaScript properties.