OnionRaster creates large scale PDF posters based on an image. For best results use an image with a high level of contrast.

OnionRaster was inspired by The Rasterbator.

OnionRaster can create considerably larger posters, but it has been restricted to conserve CPU time.

If you need a larger poster for non-commercial purposes contact Onion at onion@ooer.com.

OnionRaster uses the FPDF PDF generation library.