Screen Aspect Ratio & Resolution Check
Use this when content looks stretched, cropped or displayed at an unexpected size.
Screen — · viewport —
CSS screen—
Viewport—
Pixel ratio—
Refresh estimate—
DeviceOK can display patterns and estimate browser frame timing, but visual panel defects still require your inspection and professional measurements require dedicated hardware.
What happened?Choose the result you observed.
Privacy: Screen dimensions are read locally from browser APIs.
What this test tells you
This test checks
- Screen dimensions
- Viewport dimensions
- Device pixel ratio
How to read the result
Browser-reported CSS dimensions can differ from physical panel pixels because of scaling.
Use OS/display settings for the panel's native mode.