> On 31.03.2016, at 13:40, John Hewson <[email protected]> wrote: > >> >> 2. What would be your suggestion for non-lossy compression for color images >> in PDF files? I know LZW is an answer, but the compression is much worst >> than JPEG2000. > > First of all I'd check if a maximum-quality JPEG isn't good enough. It > usually is. If you really need lossless (and as you're archiving you might > well do) then PNG is simple and reliable. There are ways to losslessly > optimise the colour palette to reduce file size a bit. Also make sure you use > the right colour space - a b&w raster is 1/3 the size of an RGB one.
JPEG2000 also lets you do lossless compression. PNG does not have anything to do with PDF. Olaf --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
