Custom Logo Stamp - Self Inking - 2" Logo Stamp Custom Logo Stamp - Self Inking - 2" Logo Stamp Provide your logo by clicking on the 'Customize Now' button on the right. If possible, send us a one color logo. Amazon's upload feature accepts JPG and PNG files. If you are having any issues with uploading your file, please don't hesitate to contact us. Manufactured in Jacksonville, FL by Holmes Stamp & Sign