[NTG-pdftex] PNG image embedding

There is a small q+d patch on my homepage at http://www.circuitwizard.de/pdftex/patch5/index.html which tries to embed PNG files natively, without the usual slow decompressing + compressing steps done by pdftex---only if the PNG image type allows that. This usually results in a smaller overall PDF file size, as the original line-by-line predictor type informations from the PNG image are carried over into the PDF file. And the PNG embedding is speedier. Best Regards, Hartmut P.S. The newest libtiff comes with a tiff2pdf program. Quite handy.