low-resolution

(lōˈrĕzˌə-lo͞oˈshən)

1. Of or relating to an image that lacks fine detail.
2. Computer Science
   a. Of or relating to an output device, such as a printer, whose images do not contain a large number of dots per unit of area and therefore lack sharpness.
   b. Of or relating to a raster-based image that does not contain a large number of pixels per unit of area.