- Face height
- — px
- Cheek width
- — px
φ ≈ 1.618 · arithmetic reference
Hair, a hidden hairline, or tight framing can make the hairline or chin hard to place; head tilt can change the apparent cheek width.
Facet / Portrait studies Field note 02
Compare two face photos
Mark the landmarks on a portrait and see the lengths behind five facial ratios. Open a second photo to compare how the measurements change.
01 / Workspace
Landmark studio
No photo here yetChoose a local photo or use the marked example.
Fictional example · hand-marked640 × 640 px
12 / 12 marked
Tap to set a point, or drag a numbered dot. X and Y start at the top left in original pixels. Left and right mean the sides of the image.
The example is ready. Choose any reading to trace it.
02 / Measurements
Photo AThe five readings
Numerator Denominator
- Mouth width
- — px
- Nose width
- — px
A smile, pursed lips, or a strong nose shadow can make the mouth corners or nose edges difficult to locate.
- Inner eye gap
- — px
- Nose width
- — px
Glare, makeup, or partially closed eyes can obscure the inner eye corners; nose shadows can soften the nose edges.
- Hairline to nose base
- — px
- Nose base to chin
- — px
Hair can hide the hairline, while expression or a head turn can make the nose base and chin less clear.
- Nose tip to screen-left cheek
- — px
- Nose tip to screen-right cheek
- — px
1.000 means the two marked distances are equal.
A head turn or uneven lighting can shift the apparent nose tip and cheek edges.
03 / Two-photo study
Your photos, side by side
Use two photos of yourself with a similar pose. Each column uses its own original image. Compare ratios across photos; pixel lengths depend on framing and resolution.
| Proportion | Photo A | Photo B | B − A |
|---|
04 / Take it with you
Keep a practice sheet
Save your readings and a blank repeat-measurement page. The file contains numbers only; your portraits and filenames stay out of it.
Measurement method & tips
Use a front-facing, level portrait with a relaxed expression and even light. Mark the visible skin outline at the cheeks, excluding the ears. Leave a hidden landmark unmarked. Each length is the straight-line distance between two points in the upright original image. Ratios use full precision before display rounding.
To check repeatability, load the same photo in both slots and mark it twice independently. To explore pose or lighting, change one thing between shots. A difference can come from the photo or from point placement.
Images and marks live in this tab's memory. Clear the photo or reload to discard them. Saved worksheets stay on your device until you delete them.
Choosing between two pictures? Ask friends to vote on your photos. You choose which pictures to share when you start the vote.