United States passport photo size & rules
The United States uses one of the most recognizable formats in the world: a square photo measuring 51x51mm, universally known as the 2x2 inch photo. At the U.S. Department of State's recommended print resolution of 600 dpi, that equals exactly 600x600 pixels, which is why the digital version you upload to the online passport application must be square. Unlike most other countries, the U.S. deliberately avoids the 35x45mm rectangle used across Europe and Asia, so a photo cut for a British or Indian document will be rejected for a U.S. passport or visa.
The background must be plain white or off-white with no patterns, shadows, or other people in the frame. Your head must be centered and sized so that the distance from the bottom of your chin to the top of your head measures roughly 25 to 35mm (about 50-69% of the image height). Face the camera squarely with a neutral expression or a natural smile and both eyes open. Everyday prescription glasses are no longer accepted for U.S. passport photos except in rare documented medical cases, and head coverings are only allowed for religious or medical reasons with a signed statement.
Pixohub prepares your United States passport photo entirely inside your browser: nothing is uploaded to a server, which is a real privacy advantage for identity documents, and the tool is free to use. That said, official U.S. requirements can change, and consular posts abroad sometimes apply stricter checks. Always confirm the current specifications on travel.state.gov before you print or submit your photo so a small oversight does not delay your passport or visa.