What file type do I provide for best print results? Vector graphics provide the sharpest edge for optimum print reproduction. In addition, vector files can be increased to any size and still retain excellent quality. Vector files are generally created in Adobe Illustrator and saved back as an .eps (Encapsulated PostScript) or .ai file. Logos, type, line art and illustrations are best suited for this file format. Raster Images are best used for photographs but are utilized for graphics on web sites as well. Raster or bitmap images are composed of pixels that achieve the gradients and subtle color changes. Common file formats for raster images include: jpgs, gifs, png, tiff and bmp. Most common color modes for raster images include CMYK (cyan, magenta, yellow and black) and RGB (red, green and blue). CMYK is a color mode generally used in print production while RGB is used for web sites and some large scale printing. Can a PDF file be used for print collateral? The answer is yes and no. PDF files have become a standard way of distributing files through email and the internet for review and print production. All types of files can be converted to PDF format in low resolution (view only) or high resolution (print ready). Get Adobe Acrobat Reader Here. Be aware that low resolution pdfs can be edited and resized to create print ready files but they often require a graphic designer who can rip the file apart and edit the file accordingly.