.AI – Adobe Illustrator. Convert all fonts to outlines and embed any linked graphics.
.INDD – Adobe InDesign. Converting your fonts to outlines is recommended. Package your files to include your links, and fonts (if not outlined).
.JPG or .JPEG – Photographic images. Set your camera to the highest resolution if using your own photos. Note that most jpeg images downloaded from the web are low quality and unsuitable for printing. Fonts (.TTF). Package your files to include your fonts and links. Compress the packaged folder (.zip or .sit) before sending.
.PSD – Adobe Photoshop. Flatten your layers before submitting your files.
.TIF or .TIFF – This graphic file format will retain the highest possible image quality.
.PDF - Adobe Acrobat. Make sure to include bleed (see below for explanation) in your file.
.PUB - Microsoft Publisher. Use the Save for Commercial Printer option under Save and Send and follow the Pack and Go Wizard instructions.