% \shipout\vbox{ \vbox to5cm{} \special{pdf:image @jpegpic (image.jpeg)} \special{pdf:uxobj @jpegpic} } \advance\count0 by 1 % \shipout\vbox{ \vbox to5cm{} \special{pdf:image @pngpic (image.png)} \special{pdf:uxobj @pngpic} } \advance\count0 by 1 % \shipout\vbox{ \vbox to5cm{} \special{pdf:image @pdfpic (image.pdf)} \special{pdf:uxobj @pdfpic} } \advance\count0 by 1 % \bye