.AI – Adobe Illustrator. Convert all fonts to outlines and embed any linked graphics.
.INDD – Adobe InDesign. Converting your fonts to outlines is recommended if you are not using True Type
.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.