ruby Add support for QRCode 2D codes using dev-ruby/rqrcode. Add support for writing PDF documents using dev-ruby/prawn. Add support for writing PNG images using dev-ruby/chunky_png. Add support for writing images (among others PNG, GIF and JPEG) using dev-ruby/rmagick. Not available on JRuby. Add support for writing images (PNG, PS, EPS and, if supported, PDF and SVG) using dev-ruby/rcairo. Not available on JRuby.