Convert hpm to pdf Online: hpm2pdf

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

Go to Tom's Editor

HPM

Grass' Slideshow is an image format with extension HPM.

PDF

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