The FX3 format is associated with some GPS applications or digital charts developed by Fugawi. An FX3 image file most likely contains a detailed map and might be difficult to open outside the software it has been created for. If you do want to try this, conversion is the best solution.
The quick and simple way to handle your files is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch conversions. As you will soon realize, reaConverter will help you avoid spending countless hours trying to figure out how to convert multiple FX3 files as once.
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