How does the AI face shape detector work?

Our tool uses face-api.js powered by TensorFlow.js to detect 68 facial landmark points directly in your browser. It then calculates key measurements — face width, length, forehead, cheekbones, and jawline — and classifies your face shape using proven geometric ratios. All processing happens locally on your device.

Is my photo stored or uploaded anywhere?

No. Your photo never leaves your device. All AI analysis runs entirely in your browser using WebAssembly and TensorFlow.js. We don't have a server that receives your image. This is a core feature of our privacy-first design.

What are the 6 face shape types?

The six main face shapes are: Oval (balanced, slightly longer than wide), Round (nearly equal length and width with soft curves), Heart (wider forehead, narrower jaw), Square (strong angular jaw, similar forehead/jaw width), Diamond (prominent cheekbones, narrow forehead and jaw), and Oblong (significantly longer than wide with similar top/bottom width).

How accurate is the face shape detection?

Our AI is highly accurate for clear, front-facing photos with good lighting. The detection uses 68 anatomical landmark points and geometric ratio analysis. For best results, use a photo where your full face is visible, you're looking straight at the camera, and there are no accessories covering key facial features.

What photo should I use for best results?

For the most accurate results: use a front-facing photo with your face fully visible, ensure good, even lighting (avoid harsh shadows), pull your hair back if possible, look straight at the camera, and make sure your face takes up at least 30% of the frame. Avoid glasses or face coverings.

Can I use this tool on mobile?

Yes! FaceShape AI is fully mobile-responsive and works on all modern smartphones and tablets. You can upload a photo directly from your camera roll or take a new photo using your device camera.

What do the hairstyle recommendations mean?

Each face shape has hairstyles that are most flattering for it based on established beauty principles. These recommendations aim to create visual balance — for example, adding height for round faces or width for oblong faces. They're starting points, not strict rules — personal style always wins!

What is the facial symmetry score?

Your symmetry score measures how evenly balanced your facial features are from left to right, how your proportions compare to the golden ratio (1.618:1), and how defined your jawline is. Higher scores indicate greater facial harmony. No face is perfectly symmetrical — variation is natural and beautiful.

Do I need to create an account?

No account required. FaceShape AI is completely free and requires zero sign-up. Just visit the site, upload your photo, and get your results instantly.

Why does it take a few seconds on the first use?

On your first visit, the AI model files (~6MB) need to be downloaded from our server to your browser. This is a one-time download — after that, your browser caches the models and all subsequent analyses are instant. We use lazy loading so models only download when you interact with the tool.

Can I use my camera to detect my face shape?

Yes! Our face shape detector includes a built-in camera feature. Just click 'Take Selfie', allow camera access, and capture your photo directly in the browser. Your camera turns off immediately after the photo is taken and nothing is stored.

Heart vs Diamond Face Shape: Key Differences Explained

At first glance, heart and diamond face shapes can look remarkably similar. Both feature prominent, wide cheekbones. Both narrow at the chin. And in selfies or mirror checks without precise measurements, they're easy to confuse.

But they're actually quite different shapes — and the styling implications (particularly for hair) diverge significantly.

Use our free AI face shape detector to get a precise result, or read on to understand the distinction in detail.

The One Key Difference

The clearest way to distinguish a heart from a diamond face is to look at the forehead:

Heart face: Wide forehead — the forehead is roughly as wide as (or wider than) the cheekbones
Diamond face: Narrow forehead — the forehead is significantly narrower than the cheekbones

That's it. Both shapes have wide cheekbones and a narrow, pointed chin. The forehead is where they diverge.

Heart Face Shape: Characteristics

Wide forehead (the broadest feature, or tied with the cheekbones)
Prominent cheekbones
Narrow jaw
Pointed or softly pointed chin (like an inverted triangle, or a heart if you count the widow's peak at the hairline)
Often accompanied by a widow's peak hairline — a V-shaped dip at the center of the forehead

Think of it as: An upside-down triangle

Celebrity examples: Reese Witherspoon, Scarlett Johansson, Ryan Gosling

Diamond Face Shape: Characteristics

Narrow forehead
Dramatically wide cheekbones (the widest feature by a clear margin)
Narrow jaw
Pointed or angular chin
The face appears widest at the cheekbones, with both the top and bottom narrowing from there

Think of it as: A geometric diamond or rhombus — widest in the middle

Celebrity examples: Halle Berry, Jennifer Lopez, Ashley Judd

Side-by-Side Comparison

| Feature | Heart | Diamond | |---|---|---| | Forehead | Wide | Narrow | | Cheekbones | Wide | Very wide (widest by far) | | Jaw | Narrow | Narrow | | Chin | Pointed or soft point | Pointed or angular | | Widest point | Forehead or cheekbones | Cheekbones, definitively | | Overall shape | Inverted triangle | Rhombus/diamond |

How to Identify Your Shape at Home

Step 1: Measure your forehead width (hairline to hairline at the widest point)

Step 2: Measure your cheekbone width (outer eye corner to outer eye corner at the top of the cheekbones)

Step 3: Compare:

If forehead ≈ cheekbone width → Heart face
If cheekbone width is notably larger than forehead → Diamond face

As a secondary check, measure your jaw. If it's significantly narrower than both (which it should be for both shapes), the forehead measurement is your deciding factor.

Why Getting It Right Matters

Hair

Heart face: Add volume at the chin level, minimize forehead width. Chin-length bobs and styles that flare out at jaw level are ideal. See: Heart Face Hairstyles

Diamond face: Add width at the forehead AND chin. Full bangs add width at the top; chin-level volume adds width at the bottom. See: Diamond Face Hairstyles

The key difference: heart faces benefit from styles that reduce forehead prominence; diamond faces benefit from styles that add forehead width. These are opposite goals.

Glasses

Heart face: Bottom-heavy frames (aviators, wayfarers, rounded rectangular) add width at the bottom half of the face to balance a wide forehead.

Diamond face: Frames with width at the top (brow-line frames, cat-eye glasses) add width to the narrow upper face.

See the full glasses guide: Best Glasses for Every Face Shape

Makeup

Heart face: Contour the temples and outer forehead to narrow the top; highlight the chin to broaden it.

Diamond face: Highlight the forehead center and chin; contour the cheekbones very lightly to reduce their prominence.

The Widow's Peak Clue

Many heart-shaped faces feature a widow's peak — the distinctive V-shaped point of hair growth at the center of the forehead. This hairline shape is particularly associated with heart faces (it's where the "heart" shape gets its name) and is less common on diamond faces.

If you have a clear widow's peak and wide cheekbones, you're almost certainly a heart face.

Still Confused?

The honest truth is that many faces are blends. A "heart-diamond" or "diamond-heart" is a real thing — featuring very wide cheekbones, a slightly narrower-than-normal forehead, and a pointed chin. Our AI detector handles these blended cases by giving a confidence percentage for each shape.