pdftopng.py

#!/usr/bin/env python

import sys, os
import poppler
import cairo

if __name__ == '__main__':
    uri = 'file://%s' % os.path.abspath(sys.argv[1])
    prefix = sys.argv[2]
    width = int(sys.argv[3])
    height = int(sys.argv[4])

    doc = poppler.document_new_from_file(uri, None)
    for i in range(doc.get_n_pages()):
        page = doc.get_page(i)
        page_width, page_height = page.get_size()
        surface = cairo.ImageSurface(cairo.FORMAT_ARGB32, width, height)
        cr = cairo.Context(surface)

        cr.translate(0, 0)
        cr.scale(width/page_width, height/page_height)
        page.render(cr)
        cr.set_operator(cairo.OPERATOR_DEST_OVER)
        cr.set_source_rgb(1, 1, 1)
        cr.paint()

        surface.write_to_png('%s-%u.png' % (prefix, i+1))