Free tool
Check your posture from one photo
Take a side-on photo, place four markers on it, and get a score for the three things a side view actually shows: whether your head sits over your shoulders, whether your trunk is vertical, and where your hips sit. It runs in your browser — the photo is never uploaded.
Start with a side-on photo
Stand side-on to the camera, arms relaxed, whole body in frame. Have someone take it, or prop your phone against something and use the timer.
Your photo stays in this browser tab. It is not uploaded, and this site has no server to upload it to.
What it measures, and what it can’t
A side-on photo is the single most informative view of standing posture, because the two most common desk-worker patterns — forward head posture and anterior pelvic tilt — are both invisible from the front. Lining your ear, shoulder, hip and knee against a vertical plumb line is the same first check a physiotherapist makes.
What it can’t do is see inside you. It cannot tell a structural curve from a habitual one, it cannot assess pain, and one photo of one moment is not how you stand all day. Treat the number as a starting point and a baseline to re-measure against, not a diagnosis.
The markers are placed by hand on purpose. Automatic pose detection on a single amateur photo — unknown distance, unknown lens, loose clothing — misplaces landmarks often enough that a wrong answer given confidently would be worse than asking you to spend twenty seconds dragging four dots. In the iPhone app this step is automatic, because a live camera gives many frames to agree on rather than one.
Getting a usable photo
- Stand side-on to the camera with your whole body in frame, from head to at least your knees.
- Arms relaxed at your sides. Don't correct your posture — stand the way you normally stand.
- Camera at roughly hip height. Shooting from above or below tilts the whole result.
- Close-fitting clothes, or at least a top that shows your shoulder line.
- A plain wall behind you makes the landmarks much easier to find.