Hello!
May I please ask what size of photo did IO require for your naturalization? Is it the passport size and how many do they need? I'm going to have my interview this week and planning on bringing pictures as well to avoid possible delay.
Edit: Belpw is what I found online as picture requirement. Am I on the right page?
Photographs. Only applicants who reside overseas must provide two identical color photographs of yourself taken recently. The photos must have a white to off-white background, be printed on thin paper with a glossy finish, and be unmounted and unretouched. Passport-style photos must be 2” x 2”. The photos must be in color with full face, frontal view on a white to off-white background. Head height should measure 1” to 1 3/8” from top of hair to bottom of chin, and eye height is between 1 1/8” to 1 3/8” from bottom of photo. Your head must be bare, unless contrary to your religious beliefs. Using a pencil or felt pen, lightly print your name and A-Number (if any) on the back of the photo