Screen Tearing Test
Visual aid for noticing tear lines.
Visual inspection aidPrivacy-first
Tests run locally in your browser. We do not upload keystrokes, pointer paths, or media.
Important
- Visual aid only — cannot read panel VSync state or certify gaming settings.
- Browser compositor and window mode affect what you see.
This page only generates motion patterns. It cannot read your panel or certify VSync. Not seeing a tear does not prove hardware never tears; seeing a discontinuity does not prove the display is damaged.
Fullscreen not supportedWake Lock not supported
Session: Ready
Your observation (not a hardware certificate)
How to use
- Start the motion pattern in fullscreen if helpful.
- Try horizontal and vertical directions and different speeds.
- Look for tear lines or judder without forcing a hardware verdict.
- Stop when finished; record a local observation if you want.
What the result means
- Results are browser-local observations with explicit limitations.
- See Limitations for what this tool cannot claim.
Limitations
- Visual aid only — cannot read panel VSync state or certify gaming settings.
- Browser compositor and window mode affect what you see.
Troubleshooting
- Nothing happens after Start
- Focus the tab, allow required permissions if prompted, and ensure the control surface is active.
- Permission was denied
- Open browser site settings for this origin, re-enable camera/microphone, then reload and try again.
Related tools
FAQ
Is this a hardware laboratory result?
No. DeviceMetrik reports browser-observed or visual-aid results with clear limits.