GEARCHECK LABDisplay steady gray or a static stripe pattern while you inspect your screen under consistent conditions. This observation aid does not flash automatically or claim to measure a panel’s physical flicker frequency.
No automated flashing. No physical flicker frequency or PWM value is measured.
The page shows a static browser-rendered pattern. A changing appearance can involve panel behavior, brightness control, room lighting, scaling or visual interaction with fine stripes. A camera aimed at the display can introduce rolling-shutter bands of its own, so such bands are not a calibrated frequency reading. The tool intentionally provides no PWM number, flicker-free certification or automatic hardware verdict.
Fine stripe patterns may look different under browser zoom and display scaling; that does not by itself establish a physical flicker defect. The page cannot sample the light emitted by the panel or measure temporal modulation. Use specialist measurement equipment when an actual flicker frequency or modulation depth is required. Fullscreen is optional and the pattern remains steady until you change a control. Stop viewing a pattern if it feels uncomfortable.
No. A web page cannot measure emitted screen light without an appropriate external sensor. This tool is a steady observation aid rather than a flicker meter.
Diagnostic data is processed locally in this tab and is not intentionally sent to analytics. Network tools send only their test probes and temporary payloads to GearCheck Lab’s speed-test server. Media and device access starts only after your explicit action and any required browser permission. Downloaded results stay on your device.
Read the privacy policy and testing methodology. If something fails, report the tool URL and visible message.