Resolution in design refers to the number of pixels or dots that are used to represent an image or graphic. In digital design, resolution is typically expressed as the number of pixels per inch (PPI) or dots per inch (DPI). A higher resolution means that more pixels or dots are used to represent the image, resulting in a higher level of detail and clarity. However, higher resolution images also require more storage space and may take longer to load or render.

The appropriate resolution for a design project depends on various factors, such as the intended use of the image, the size of the image and the viewing distance. For example, images intended for print typically require a higher resolution than those intended for web or screen use, as the print medium can reveal more detail.