Viewport & Screen Size Test
Inspect browser viewport, screen values and device pixel ratio.
⌁Your device, your test.
Press Start to begin. Some tests will request browser permission.
No test started. Your device data stays in the browser.
INSTRUCTIONS / TEST
How to run this test
Resize the window and compare current viewport and screen values.
What this test cannot guarantee
Reported CSS pixels and device pixel ratio are not always physical screen dimensions.
PRIVACY BY DESIGN · Tests run on your device. No microphone, camera or sensor data is uploaded to DeviceCheckup.