GPS TrackMaker Reference Manual page 106

Images with up to 256 colors will be imported as...
GTM PRO® is able to import TIFF, PNG and PCX formats that are converted to JPG, GIF or BMP formats supported
by the free version.
To define in which format the images with up to 256 colors will be converted, select:
• GIF (recommended) to obtain compressed images with small sizes
• BMP to obtain images without compression
Images with more than 256 colors will be imported as...
To define in which format the images with more than 256 colors will be converted, select:
•
JPG (recommended) to obtain compressed images with small sizes
• BMP to obtain images without compression
106