draw_first_page_from

# File activestorage/lib/active_storage/previewer/poppler_pdf_previewer.rb, line 30
      def draw_first_page_from(file, &block)
        # use 72 dpi to match thumbnail dimensions of the PDF
        draw self.class.pdftoppm_path, "-singlefile", "-cropbox", "-r", "72", "-png", file.path, &block
      end