Inspect greyscale and colour gradients, direction and intentional band steps on your display.
Preview ready. Inspect locally; no automatic pass/fail result.
Inspect the pattern visually. Fullscreen expands it; Escape or Exit fullscreen returns. Overlay controls can move to expose covered pixels.
Gradients are rendered by the browser for manual inspection. Smooth and intentionally stepped patterns are distinct; visible bands can come from the pattern, browser, operating system or panel. This is not colour calibration, HDR or bit-depth certification. No automatic flashing. Fullscreen may be unavailable.
Reports contain the observations currently shown, not an automatic hardware health verdict. No report is uploaded or saved automatically.
These tools run locally and do not upload your device observations, camera video, microphone input or interaction events. There are no accounts or stored test histories. Camera and microphone access stays under browser permission controls.
Gradients are rendered by the browser for manual inspection. Smooth and intentionally stepped patterns are distinct; visible bands can come from the pattern, browser, operating system or panel. This is not colour calibration, HDR or bit-depth certification. No automatic flashing. Fullscreen may be unavailable.
No. The browser exposes a limited set of events and reported settings. Inspect or listen to the actual result and compare with other applications if needed. Missing browser events or unavailable features do not prove a hardware failure.
Active input capture, audio playback and camera/microphone tracks are released on Stop, hidden tab, workspace switching and page exit. Pending permission results are ignored and late tracks stopped. Reports download only when explicitly chosen.
