Global Mapper v25.0

Incorrect export to JNX

Good day!
GM 22.0. I have a set of tiles downloaded from SAS.Planet and the area to crop them.

After cropping, I export the set to a JNX map.

However, the target JNX file has an uncropped area. In JNX viewer and Garmin GPSMAP 62S.

If you are interested, the initial data is here:


  • bmg_bob
    bmg_bob Global Mapper Programmer

    It looks like the image exported to JNX is a JPG, which doesn't support transparent pixels. I don't know if different formats are supported in JNX files. 

    I suggest that you contact Blue Marble Support directly via email ( They will be able to look into this further. Please include a detailed description of your workflow (as you have done here) and the link to your data. Thanks.

  • bmg_bob, hello!
    Thanks for the advice! I will wait a bit - suddenly one of the participants has a solution.
    Files to export in Geotiff.