How to Convert Multiple VFF Files to FITS?
1. Download and Install reaConverter
reaConverter is a standalone Windows app — download, install, and start converting VFF files in under two minutes.
2. Load your VFF files
Open reaConverter and add your VFF files. You can load individual files, entire folders, or even nested subfolders.
Drop your VFF files into the window or use File menu to browse and select folders.

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

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

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






