Convert spu to pdf Online: spu2pdf

You can use Tom's Editor to easily convert images from
Spectrum 512 .SPU to Portable Document Format .PDF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

SPU

Spectrum 512 is an image format with extension SPU.

PDF

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