How to Convert Multiple VSI Images to ICO?
1. Download and Install reaConverter
reaConverter is a standalone Windows app — download, install, and start converting VSI files in under two minutes. reaConverter also includes editing tools: resize, crop, rotate, and more.
2. Load your VSI files
Open reaConverter and add your VSI files. You can load individual files, entire folders, or even nested subfolders.
Drop your VSI files into the window or use File menu to browse and select folders.

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

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

After conversion, find your ICO files in the output folder. Click 'Show converted files' to open it directly.
Before you convert VSI to ICO
VSI carries 16 bits per channel and ICO carries 8, so tonal steps get coarser during conversion. It shows up first in smooth gradients such as skies. If the result will be edited further, move to an 8-bit format only at the very end. ICO stores a limited palette rather than full colour, so the conversion has to reduce the number of distinct colours. Photographic content shows this as banding, while flat graphics and icons usually survive it untouched.







