Japanese passport photo

35 × 45 mm, with the head 32 to 36 mm tall from chin to top of hair.

The measurements

Photo size: 35 × 45 mm
Head height: 32 to 36 mm, chin to top of hair
Space above the hair: 2 to 6 mm
Background: Plain, no shadows
As a digital file: 413 × 531 pixels at 300 dpi, or 827 × 1063 pixels at 600 dpi
Used for: Passport

Plain background with no shadows.

Consulates sometimes ask for something slightly different from the home country, so read the photo page of the office you are applying to before you print.

Taking the photo at home

Stand about 2 feet in front of a plain white or light gray wall.
Face a window, so the light is even and there is no shadow behind you.
Have someone hold the phone at eye level, 4 to 5 feet away.
Eyes open, mouth closed, looking straight at the camera. No glasses or hat.
Leave room around your head. The tool crops it to 35 × 45 mm.