Face Shape Detector, With Its Homework Showing

Field notes

The detector accepts either a portrait or four measurements, then compares proportions against interval-based rules rather than returning an unexplained label. Its photo mode uses MediaPipe landmark pairs as width and length proxies, while the manual mode accepts centimeters or inches and asks users to measure straight across. The page exposes a 0.04 close-call margin and a 0.10 poor-fit margin, both identified as prototype choices rather than validated thresholds.