noun
Describes a photo print size roughly 8.9 cm × 6.4 cm, commonly used for ID photos and personal keepsakes.
証明写真は手札型でお願いします。
Please provide the ID photo in wallet size.
名刺型 is business-card size (91 mm × 55 mm), slightly wider and shorter than 手札型.
Compound of 手札 (てふだ, 'card' or 'handbill') and 型 (がた, 'type' or 'format'), referring to a photo size originally matching the dimensions of early Japanese handbills or calling cards.