PSL Scale

Understand the visible facial proportions in a photo. PSL Scale reviews left-to-right balance, vertical thirds, horizontal fifths, and face length-to-width, then explains the measurements with a broad reference range and a photo-suitability check. Start with a free browser-based test without signing up. Designed to make photo analysis transparent and help users compare shooting conditions, with clear explanations of how angle, lighting, and distance affect the result. The community PSL convention is not a validated standard or a measure of personal worth.