This test may cause image retention caused by an interaction with LCD inversion logic. Problems do not occur on all displays, but can affect certain displays, most particularly older 144Hz TN panels as well as older Microsoft Surface 60Hz LCDs.

To test for burn-in effects, drag this browser window around after 1 minute. On LCDs prone to burn-in from software-based black frame insertion, there will be duplicate copies of "Burn-In" text.

To fix image retention, play a full screen action video for a few minutes, or run TestUFO Photo in fullscreen

WARNING: May cause LCD Image Retention. May cause epileptic siezures.
Test For Short Periods Only. Retention will disappear gradually after leaving this screen.