How to Convert Multiple GXT Files to JP2?
1. Download and Install reaConverter
First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.
2. Load your GXT files
Add GXT files to reaConverter. One file or a thousand, the process is the same. Everything runs locally on your machine.
You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

3. Select JP2 as output format
Select JP2 from the output format list and set your destination folder. You can also adjust quality and compression settings.

4. Start GXT to JP2 conversion
Click the Convert button to start. reaConverter will process all your files with the settings you selected.

When finished, your new .jp2 files will be waiting in the destination folder.









