Premium Postcards works primarily on a MAC based platform. However, can accept PC files as PDF, EPS, and TIF.  Please call us toll free to discuss your options or email us at info@premiupostcards.com   For your order to go smoothly, please read the following artwork specifications. If you are not a designer and have hired a third party to do your design work, please make sure that the have a copy of this page before they start working on your design.  You must  print out our Digital File Checklist and submit it with your order.  All postcards are printed CMYK on the front and CMYK on the back. All colors must be converted to CMYK prior to submission.  Any author's alterations that have to be made at this end will be billed at and hourly rate of $75.00 per hour with a minimum charge of $25.00.  We can not accept any JPEG or Gif Files unless they are 300dpi.  Name your file the same name as your company.