Renders every page of the PDF as a 150 dpi PNG named page-1.png, page-2.png and so on. -sDEVICE=png16m is 24-bit color and -r150 sets the resolution. -o implies -dNOPAUSE -dBATCH, so it never pauses.
Looking for more? Search all 7,657 commands — works offline, in English or Spanish, and fixes typos.