Convert gbr to pdf Online: gbr2pdf

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

Go to Tom's Editor

GBR

GBR are images that can be used as brushes in GIMP image editor.

PDF

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