Convert mbm to pdf Online: mbm2pdf

You can use Tom's Editor to easily convert images from
Psion Series 5 Bitmap .MBM to Portable Document Format .PDF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

MBM

Psion Series 5 Bitmap is an image format with extension MBM.

PDF

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