It is always best to start with a good quality image for the final printed images to be crisp and clear. EPS is a vector format designed for printing to PostScript printers and imagesetters. Vector-based graphics, EPS, are the best choice for high resolution printing of illustrations because it can be enlarged while maintaining sharpness and clarity and do not use halftone images. Raster based graphics, a TIFF, JPG or GIF, are best when some type of photographic image is part of the product. A TIFF is a versatile bitmap graphic format that is great for high-resolution printing to PostScript printers and imagesetters, however it cannot be enlarged without reducing its quality. JPG and GIF are also bitmap-based, but these formats save as lower resolution files. We prefer TIFF over JPG or GIF raster-based graphic files. Note: Vector and raster files can be combined in a design, provided all files used to create it are included with the file.