[ FAQS ]
Everything you need to know about our in-browser anthropometric classification engine.
How accurate is the AI face shape detector?
Our engine achieves 88–95% accuracy on clear front-facing photos, calibrated against Farkas (1994) craniofacial anthropometric standards. By calculating 468 3D landmark coordinates in real-time, the algorithm measures key proportional ratios—forehead-to-jaw width, zygomatic cheekbone prominence, and trichion-to-menton vertical height—without the perspective distortion common in legacy 2D bounding boxes.
What are the 7 main face shapes and which is the most common?
The seven recognized craniofacial shapes are Oval, Round, Square, Heart, Diamond, Oblong, and Triangle. Oval is the most common (representing approximately 28% of the global population) and serves as the classical baseline for symmetrical aesthetics. Diamond is statistically the rarest, occurring in roughly 5% of individuals.
What is the difference between an Oval and an Oblong face shape?
While both profiles are longer than they are wide, an Oval face has softly rounded contours with a jawline that gently tapers narrower than the cheekbones. An Oblong face features straighter vertical lateral sides, minimal tapering between temple and jaw, and an elongated vertical length ratio exceeding 1.65× cheekbone width.
What is the difference between an AI face shape detector and a face shape calculator?
An AI face shape detector uses on-device computer vision to automatically map 468 facial coordinates from a camera feed or photo in milliseconds. A manual face shape calculator requires measuring four physical dimensions (forehead, cheekbone, jawline, and face length) with a tape measure and computing ratios manually. Both produce matching results when manual measurements are taken precisely.
Can I determine my face shape without taking manual measurements?
Yes. Our AI detector eliminates the need for tape measures, mirror tracing, or subjective multi-question quizzes. Simply upload a front-facing selfie or enable your camera, and the algorithm measures and classifies your facial geometry instantly.
How should I position myself for the most accurate facial scan?
Position yourself facing the camera straight-on at eye level with a neutral expression. Pull your hair back to fully reveal your forehead hairline, cheekbones, and jawline contour. Ensure balanced, diffused lighting to prevent harsh unilateral shadows from skewing landmark triangulation.
What glasses suit my face shape?
Eyewear selection follows the principle of geometric contrast: angular and rectangular frames add definition to soft Round faces; rounded or oval frames soften angular Square jaws; aviator or bottom-heavy frames balance wider foreheads on Heart faces; tall, oversized frames break up vertical length on Oblong faces; and Oval faces can comfortably wear almost any frame geometry.
Can I use this face shape detector to choose hairstyles?
Yes. Every analysis delivers tailored, gender-filtered hairstyle guides. For example, Round faces benefit from crown volume, textured quiffs, pompadours, and side-swept fringes that create vertical elongation, while Square faces look best with soft textured layers and side parts that soften sharp 90° gonial angles.
What is the PSL scale and how does facial attractiveness rating work?
The PSL (Pure Sexual Looks) scale is an objective 1.0–8.0 aesthetic framework popularized in craniofacial aesthetics and looksmaxxing research. It evaluates facial harmony through measurable biometrics: bilateral symmetry, golden ratio (Phi 1.618) facial thirds, canthal tilt angle, and jaw-to-cheekbone definition, classifying proportions into standard tiers (Sub-5, LTN, MTN, HTN, Chadlite, and Chad tier).
What is Canthal Tilt and how does it affect eye aesthetics?
Canthal tilt is the angle of the palpebral fissure between the medial (inner) and lateral (outer) canthus. A positive canthal tilt (+2° to +6°) creates an almond or 'hunter eye' aesthetic associated with perceived youth and vigor. A neutral tilt sits horizontally, while a negative canthal tilt slopes gently downward.
How does bilateral facial symmetry affect appearance and attractiveness?
Bilateral facial symmetry is an evolutionary indicator of developmental stability and genetic health. Our tool measures horizontal alignment across seven bilateral landmark pairs (zygomatic arches, gonial angles, pupil planes, and lip corners) to calculate an objective bilateral symmetry score percentage.
What is the most attractive face shape according to scientific research?
Scientific craniofacial studies show there is no single 'most attractive' face shape. High aesthetic ratings are driven by overall facial harmony, bilateral symmetry, balanced facial thirds (forehead, midface, lower face), and feature cohesion rather than any single shape category.
Are my photos uploaded, stored, or used to train AI models?
Never. All photo decoding and landmark calculations execute 100% locally on your device using WebAssembly (WASM) and client-side WebGL acceleration. Zero image bytes or biometric vectors are ever transmitted across the internet, and image memory is instantly purged when you navigate away.
Does the face shape detector work on mobile phones?
Yes. The detector is fully responsive and optimized for mobile browsers, including iOS Safari and Android Chrome. You can use your phone's front camera for a live scan or select an existing selfie from your camera roll.
Can the tool detect mixed or hybrid face shapes?
Yes. Natural human faces frequently combine characteristics of multiple categories (e.g., Round-Oval or Square-Heart). Our engine computes weighted percentage scores across all seven profiles, displaying your primary classification alongside your secondary runner-up.
Is this tool completely free to use?
Yes, detectfaceshape.app is 100% free with no account registration, no email gates, no subscriptions, and zero ads.
