Test 1: the wall test
Stand with your heels a few centimetres from a wall, then lean back so your bottom and upper back touch it. Relax your shoulders and look straight ahead, eyes level.
- Back of your head touches the wall with your eyes level: your head is stacked over your body.
- You have to tip your chin up to get your head back to the wall: your head usually rests forward.
- There's a gap you can't close comfortably: worth checking with a physiotherapist, especially if your neck aches.
The wall test shows where your head rests when you stand. It doesn't show what happens two hours into a workday, which is where most forward head posture comes from.
Test 2: the side photo
Ask someone to take a photo of you from the side while you stand normally, arms relaxed, looking ahead. The camera should be at shoulder height and square to your body. Then draw a line straight down from your ear.
In a balanced posture that line passes through the middle of your shoulder. If your ear sits clearly in front of your shoulder, your head is forward. This is the same idea clinicians formalise as the craniovertebral angle: the angle between a horizontal line at the base of your neck and a line to your ear. The smaller the angle, the further forward the head.
Test 3: the live webcam check
The first two tests are snapshots of you standing. Forward head posture mostly builds while you sit and read, so the third test watches you sitting at your desk. Start the check above, sit up tall for three seconds, then carry on working.
PostureCheck tracks two things your webcam can see clearly from the front. When your head moves forward and down, it sits lower above your shoulders and looks larger relative to them. When both change together compared with your upright baseline, you'll see Head drifting forward and a tip to pull your chin back. Hold the slouch past your alert delay and you'll hear a chime.
Everything runs in your browser. No photo is uploaded and nothing is recorded. You get two free minutes a day; Pro keeps watching all day from a floating window.
What to do if your head sits forward
Start with your desk. The US Occupational Safety and Health Administration's computer workstation guide says to put the monitor directly in front of you, at least 20 inches away, with the top line of the screen at or below eye level, and describes a neutral posture where the head is level, forward facing and in line with the torso (OSHA, Monitors; OSHA, Positions). A laptop flat on a desk forces your head down and forward, so raise it and use a separate keyboard.
Then build the habit. Posture slips when you concentrate, not when you think about it, which is why a reminder at the moment you slip works better than trying to remember. The sitting posture guide has the full desk setup checklist.
If your neck hurts, you get headaches, or you notice numbness or tingling in your arms, see a doctor or physiotherapist rather than relying on any at-home test.