Upload photo for United States - Employment Authorization (2 x 2 inch) Size and Requirements
Country United States
Document type Employment Authorization
Passport picture size Width: 2 inch, Height: 2 inch
Resolution (DPI) 600
Image definition parameters Head must be between 1 -1 3/8 inches (25 - 35 mm) from the bottom of the chin to the top of the head
Background color White
Printable photo Yes
Digital photo for online submission Yes
Digital photo size Width: 600 pixels , Height: 600 pixels
Photo Paper type matte
Detailed requrements

Source https://www.uscis.gov/working-united-states/temporary-workers/employment-authorization-certain-h-4-dependent-spouses