Convert bb4 to pdf Online: bb42pdf

You can use Tom's Editor to easily convert images from
Mode 4 .BB4 to Portable Document Format .PDF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

BB4

Mode 4 is an image format with extension BB4.

PDF

Adobe PDF format is the most popular document format. Overcomplicated. Offers compression.