The best resolution for printing your graphics and preferred art is vector-based (EPS, Ai, or PDF). They are created in Adobe Illustrator, Corel Draw, and Adobe Indesign.  Please submit all logos as vector graphics when possible.
JPG, PNG, and PSD  files are also accepted, but because they are raster-based images (images are created in Adobe Photoshop), resolution and image size become a concern. The best size for print quality is 300ppi and close to the intended print size.