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Print Job size increase post conversion at cups server #4621

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michaelrsweet opened this Issue Apr 28, 2015 · 2 comments

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michaelrsweet commented Apr 28, 2015

Version: 2.0-current
CUPS.org User: manoj.joshi37

Hi All,

While submitting a print job to cups server, Cups convert the file to printer ready format, but the output of converted file is too high. i.e. a 1.5 MB pdf file having 320 pages in it, becomes 10 MB once pdftops conversion happens at cups end. Not sure if somebody has reported this, hence raising it as new bug.

Kindly advise.

Thanks & Regards,
Manoj Kumar Joshi

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michaelrsweet commented Apr 28, 2015

CUPS.org User: h.blischke

I suspect your system is some fairly recent Linux distribution which has the
cups-filters package from open printing.org installed, and probably the pdftops
filter installed by that package uses Ghostscript's pswrite device to convert
PDF to PostScript. It's a pity that this configuration renders all and every glyph
within the print stream as a bitmap (it does not embed the fonts themselves),
thus leading to "exploding" files.
Instead of telling all the details here, please read the conversation on
"PDF workflow with old server?"
on the CUPS user list.
If you have questions, or need specific advice, feel free to contact me directly
at "helgeblischke at web dot de"

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michaelrsweet commented Apr 28, 2015

CUPS.org User: mike

We do not support or develop the software/driver you are using. Please contact the developer for assistance.

... that said, PostScript is not as space-efficient as PDF, so a 10MB PostScript file from a 1.5MB PDF file is not unusual. And it is certainly a lot better than the GB of print data you'll get for a raster printer...

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