What are the photo requirements for a U.S. passport?

The U.S. Passport Agency has specific photo requirements that applicants must follow to ensure successful processing of passport applications. The photo must be in color, taken within the last six months, and should measure 2 x 2 inches. The background must be plain white or off-white, with no shadows or textures. The applicant's face should be fully visible and centered, with a neutral expression, meaning eyes open and mouth closed. Glasses are not permitted in the photos, and if the applicant wears head coverings for religious or medical reasons, the face must remain fully visible from ear to ear, including the chin. Additionally, the photo should be printed on quality photographic paper and should not have any corners rounded. For more detailed guidance on photo requirements, it may be helpful to visit the U.S. Passport Agency's website.