How to Convert Multiple GIH Files to JXL?
1. Download and Install reaConverter
reaConverter installs quickly on any Windows PC. No dependencies, no bloatware — just a clean setup that's ready to use immediately.
2. Load your GIH files
Open reaConverter and add your GIH files. You can load individual files, entire folders, or even nested subfolders.
Drop your GIH files into the window or use File menu to browse and select folders.

3. Select JXL as output format
Choose JXL as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

4. Start GIH to JXL conversion
Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

After conversion, find your JXL files in the output folder. Click 'Show converted files' to open it directly.






