To make your book more elegant on GitBook, you can specify a cover.

A cover is specified by a cover.jpg file, a cover_small.jpg can also exist as a smaller version of the cover. The cover should be a JPEG file.

Best Sizes

Big Small
File cover.jpg cover_small.jpg
Size(in pixels) 1800x2360 200x262


A good cover respects the following guidelines:

  • No border
  • Clearly visible book title
  • Any important text should be visible in the small version


A GitBook plugin (autocover) can also be used to generate a cover file for you, or just generate the cover_small.jpg from your big cover. This plugin is added by default on hosted books.

Read more about autocover.