The logos are available in three file formats: EPS, PNG, and JPEG. As noted in the Do and Don’t section, these logos are not to be altered, colored, or modified in any manner.
EPS (Vector)
These files are most appropriate for printing projects, but are also useful when designing projects for print or for web. Eps files are easily scaled up or down without loss of sharpness or visual integrity.
PNG (72 dpi)
PNG stands for Portable Network Graphics. It's a lossless bitmap image format that is popular on the World Wide Web. PNG was largely developed to deal with some of the shortcomings of the GIF format and allows storage of images with greater color depth and built-in transparency.
JPG (72 dpi)
These files are best for photographic images on the web, and for images used in Microsoft Word documents and PowerPoint presentations. They cannot be scaled larger than 100% of their original size. They can be scaled smaller.