Convert bb1 to pnm Online: bb12pnm
You can use Tom's Editor to easily convert images from
Mode 1 .BB1 to Portable aNy Map .PNM.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Mode 1 is an image format with extension BB1.
PNM images are uncompressed 24 bit RGB images. Can cannot store Alpha channel. PNM images come in 2 types: binary and text. Especially popular on Linux.