File Application Guidelines
EPS
Encapsulated PostScript (EPS) files are considered the best quality for reproduction. They are vector-based, meaning they can be enlarged or reduced to any size without any loss of quality. These files are set up in both Pantone (PMS) and CMYK color ranges. EPS files are most compatible with PostScript printers. (Best quality)
TIFF
Tagged Image File Format (TIFF) files are high-quality files that are suitable for printing purposes when EPS use is not possible. Although reduction of the image size produces acceptable results, enlarging the image will often result in some loss of quality. TIFFs are created in CMYK color formats.
(High quality)
JPEG
Joint Photographic Experts Group (JPEG) files are most appropriate for Web and screen presentations. These logos are formatted with RGB color modes. High-resolution JPEGs can produce printer-quality reproductions, although it is best to confirm with your designer or printer. (Low quality)
GIF
Graphics Interchange Format (GIF) files are best suited for graphics that consist of solid areas, flat color, or large fields of color, such as logos. These logos are formatted with RGB color modes. It is the preferred format for displaying the ASA logo on the Web, but is never to be used in any printed reproductions. (Web only)