:: Acrobat will not display anything over 200 inches. :: By defineing the size, you can force Acrobat to :: display your output by scaling it down to 100x100. dot -v -Tpdf -Gsize="100,100" Requirements_Completeness_Quick_Reference_Example.txt -o Requirements_Completeness_Quick_Reference_Example.pdf dot -v -Tpdf -Gsize="100,100" Requirements_Completeness_Quick_Reference_Example_Control_Relay.txt -o Requirements_Completeness_Quick_Reference_Example_Control_Relay.pdf