Free Online PGM to VIFF Converter
PGM
to
VIFF
PGM
Portable Graymap
PGM is a storage format for grayscale images. Files in this format can be opened using software: ACDSee Photo Manager 14, ACD Systems Canvas 15, Corel PaintShop Pro X4. This type of file can be edited with a text editor. PGM files can be in two versions: P2 / P5. P2 are readable, P5 - to binary formats.
VIFF
Khoros Visualization image
This is a bitmap image format used in the VisiQuest Khoros visualization software suite. VIFF can be used to store bitmaps that are made up of color zones. It can store up to 2–3 color maps, and it is used to analyze visual data in research software.
How To Convert PGM to VIFF

Step 1: Upload Files
Click the upload button or drag and drop your PGM files into the upload area.

Step 2: Convert File
Click "Convert" and wait for conversion done

Step 3: Download
Download the converted VIFF file