Since Facebook’s transition to Timeline in early 2012, the social networking giant has embraced a much more visual layout. Cover photos, one of the most prominent features of Timeline, allow individual users to add a bit of personality to their online personas. This same feature was also extended to brands and businesses, although these pages do have some restrictions that come along with them.
At minimum, Facebook cover photos must be at least 399 pixels in width. Ideally though, specs for Facebook fan pages should measure 851 pixels wide by 315 pixels tall. Per Facebook, it is recommended that images are less than 100 kilobytes in file size in order to accommodate fastest load times, although it is also recommended that images in need of higher quality resolutions (such as logos and text) be saved as PNG files to preserve integrity.