PDF and ePub books (or documents) can have cover images. To set a cover image, upload a file named
cover.jpg to your images folder. This image will be set as the book's cover image when published. If a cover image is not uploaded, a basic title page is used by default.
Cover image dimensions should match that of your book. A technical or business book cover image should be 8.5 x 11 in, while a fiction cover image should be 6 x 9 in. If you change the dimensions of your book via project settings, be sure to upload an appropriately sized cover image. It's important to have the correct proportions, as a misproportioned image will yield undesired white space on the cover.
For highest quality, a resolution of 300 pixels per inch (PPI) is recommended. Resolution can be set when exporting a file in Photoshop or Illustrator.
- 8.5 x 11" at 300 PPI is 2550 x 3300 pixels
- 6 x 9 " at 300 PPI is 1800 x 2700 pixels
Lower resolutions can be used (the image will be scaled to fit), but may result in a blurry or pixelated cover image.