Photographs. A. If you are outside the United States and filing for a refugee travel document, or if you are in the United States and filing for advance parole document. You must submit two identical color photographs of yourself taken within 30 days of the filing of this application.
You must submit evidence such as your photo identification and proof of immigration status. You can file your application online or mail it to a direct filing address depending on your immigration status. Find tips for filing a form online. You must apply for a travel document before leaving the United States.
In general, filing your N-400 application online tends to result in faster processing times compared to filing by paper. USCIS typically processes online applications more efficiently because they are submitted electronically, allowing for quicker data entry and processing.