Face symmetry test: compare your two sides
Choose a straight-on photo and this free tool compares the two sides of your face in your browser: eye level, brow height, eye width, mouth corners, nose and chin position, and cheek and jaw width. Each difference is shown as a share of your face width. There is no single score, and your photo is never uploaded.
Your photo stays on this device. It is read in your browser and never uploaded or stored.
Use a straight-on photo at eye level, hair off your face, neutral expression, even light.
How the symmetry test works
- A face-landmark model (Google’s MediaPipe Face Landmarker) runs inside this browser tab and places 478 points on your face.
- It finds your face’s own midline from 32 pairs of matching points on the left and right, in three dimensions, so a slight turn of the head doesn’t show up as a difference between your sides.
- It compares matching features on each side of that midline: how high they sit and how far out they reach.
- Each difference is divided by your face width at the cheekbones and shown as a percentage, with the points drawn on your photo so you can check them by eye.
The detector is downloaded the first time you choose a photo. The photo itself is read on your device; nothing is sent to MaxxLook or stored.
What the test compares
| Feature | What is compared |
|---|---|
| Eye level | The height of the centre of each eye |
| Brow height | How far each brow peak sits above its eye |
| Eye width | Corner-to-corner width of each eye |
| Mouth corners | The height of each corner of the mouth |
| Nose tip and chin | How far each sits from the midline |
| Cheek and jaw width | The distance from the midline to each side |
Results name the side of the photo, not your side, because phone cameras often save selfies mirrored.
How to read your result
Every face is a little asymmetric, and photos exaggerate it. A difference of a few percent is common and usually invisible in person, where faces move and light changes. The tool groups each difference as a close match (under 1.5% of face width), a slight difference or a clear difference (4% or more). These bands are rough guides, not measured noise floors, so take two or three photos before reading anything into one.
There is deliberately no overall symmetry score. Symmetry is a handful of separate comparisons, and the facial symmetry guide explains why a single number would hide more than it shows.
Take a photo that measures well
- Camera level with your eyes and straight in front of you.
- Head level, not turned. The tool refuses a turned or tilted head rather than report the tilt as asymmetry.
- Even light from the front. Light from one side shades half the face and can look like a difference.
- Neutral expression. A smile is rarely even on both sides.
- Hair off your face, with the parting not hiding a brow or eye.
What this test can’t tell you
- How you look to other people. It compares points in one still photo.
- Anything medical. It is not a medical assessment.
- Whether a change is real. Comparing photos over time needs the same setup every time and a noise floor for each measurement. The MaxxLook app does that across six guided photos and reports changes below the noise floor as “within noise”.
Common questions
How can I test my face symmetry?
Take a straight-on photo at eye level in even light with a neutral expression, then compare matching points on each side of your facial midline: eye level, brow height, mouth corners, and nose and chin position. This free tool does the comparison in your browser and shows each difference as a share of your face width.
Does this symmetry test give a score?
No. It shows each side-to-side difference separately, because symmetry is several different comparisons and small differences are normal on every face. A single score would hide which feature differs and by how much.
Is my photo uploaded?
No. The landmark model runs inside your browser and reads the photo on your device. The photo is never sent to MaxxLook or stored.