How to Convert Multiple GIH Files to PGM?
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 GIH files
Open reaConverter and import your .gih files. No file limits, no slowdowns. Add as many as you need.
Drag files into the window, use the Add Files button, or select entire folders.

3. Select PGM as output format
Select PGM as target format and pick where to save results. You can keep default settings or fine-tune the output.

4. Start GIH to PGM conversion
Hit Convert to process your files. The log window shows progress, timing, and status for every file.

Conversion complete? Your PGM files are saved to the destination folder, ready to use.








