Golden Ratio Face Analyzer is an online tool that uses AI to examine facial proportions in relation to the golden ratio, φ ≈ 1.618. Users upload a clear, front-facing photo in JPG or PNG format and receive a Harmony Score along with a breakdown of key measurements within seconds. The analysis focuses on face height, the relationship between eye spacing and mouth width, and philtrum length compared with nose length. It also considers facial width and eye spacing when assessing overall harmony.

The service is free to use and requires no sign-up. Photos are processed in memory rather than permanently stored, and results are kept temporarily for display before session data is removed. Alongside the analyzer, the site offers plain-language guides and frequently asked questions covering facial proportions, the history of the golden ratio, and how to interpret results. It presents the score as a reference for understanding facial proportions and exploring styling choices, not as a definitive judgment of beauty, which it acknowledges is subjective.