You can find Publisher Resources on DriveThruRPG here.
Publisher Resources cover an array of different products. This section contains character art, maps, publishing software user guides and writing guides—everything you might need to create your game.
General Art Specs
- Since you do not know if your resources will be used for print or digital export, it's best to set them to print because it has higher standards and can be used in either format.
- Images are best sized as close to the physical size it will be used (for example, full page art should be 8" wide by 11" tall, half page art should be 8" wide and 4" tall, quarter page art should be 4"X4" and character templates should not be taller or wider than a full page).
- For best resolution, set images to 300 dpi/ppi.