DEVICE TESTS
Screen test
Inspect solid colors for visible pixel defects.
Take a closer look.
Clean your screen gently, then inspect each solid color for stuck or missing pixels.
Switch colors at your own pace. This test covers the browser viewport, not areas behind browser controls. No automatic defect detection or flashing.
Desktop browsers may offer fullscreen after you start. Phones and tablets can keep browser or system controls visible, and touchscreens do not support the same keyboard shortcuts.