.ai,

Adobe Illustrator drawing or vector graphics file

.eps

Encapsulated postscript image file created using Adobe Illustrator; designed for high resolution printing of illustrations; standard file format for importing and exporting PostScript files

.cdr

Corel Draw Vector drawing file

.tiff

Tag Image File Format; preferred bitmap graphics format for high-resolution postscript printing

.jpg or .jpeg

standard format for photographic image compression developed by the Joint Photographic Experts Group

.psd

Bitmap file created using Adobe Photoshop

.indd

InDesign Document from Adobe Systems

.pdf

Portable Document File from Adobe Acrobat

.qxd

QuarkXpress Document or Data File

.pub

Document file associated with Microsoft Publisher