Convert dc1 to pdf Online: dc12pdf

You can use Tom's Editor to easily convert images from
DuneGraph (compressed) .DC1 to Portable Document Format .PDF.
Tom's Editor is a free, online image manipulation and converter program.

Go to Tom's Editor

DC1

DuneGraph (compressed) is an image format with extension DC1.

PDF

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