Convert pdf to rfg Online: pdf2rfg
You can use Tom's Editor to easily convert images from
Portable Document Format .PDF to LEGO Mindstorms EV3 Robot Graphics File .RFG.
Tom's Editor is a free, online image manipulation and converter program.
Go to Tom's Editor
Adobe PDF format is the most popular document format. Overcomplicated. Offers compression.
LEGO Mindstorms EV3 Robot Graphics File is an image format with extension RFG.