Some exports with 8-bit palette may result in a 4-bit image.

Description

When exporting a map from ArcMap and choosing the 8-bit paletted, 256 color option, the resultant export only contains a 4-bit, 16-color color map.

Cause

If there are less than 16 color values in the map, the resultant export contains 16 color values to minimize file size.

Solution or Workaround