With Filestar you get 172 different skills for working productively with Garmin Tile Format (.jnx) files.
About .Jnx
Name
Garmin Tile Format
Extension
.jnx
Format
Binary
Category
Raster Image
Developer
Garmin
Description
JNX is a raster image file format used by Garmin devices. It stores satellite map images seen through a BirdsEye subscription. This satellite maps are divided into smaller tiles for faster loading when displaying them. Hence, the name tile format.