4 ms·

I believe `ps2pdf` is just a front end script for Ghostscript. Even for `ps2pdf` there are a bunch of options settable, most notably are the DPI settings [1]. T

by bArray 7y ago

I believe `ps2pdf` is just a front end script for Ghostscript. Even for `ps2pdf` there are a bunch of options settable, most notably are the DPI settings [1]. The point is that I believe it works for images and/or scalar graphics. As the PS format was designed for printing [2], my guess is that it selects a DPI value suitable for printing. I can't seem to find the source code to back this up though. (Ghostscript has the simple web front-end that doesn't lend itself very well for viewing code in browser [3].) [1] https://www.biu.ac.il/os_site/documentation/gs/Ps2pdf.htm https://www.biu.ac.il/os_site/documentation/gs/Ps2pdf.htm [2] https://en.wikipedia.org/wiki/PostScript https://en.wikipedia.org/wiki/PostScript [3] http://git.ghostscript.com/?p=ghostpdl.git;a=summary http://git.ghostscript.com/?p=ghostpdl.git;a=summary

mkl 7y ago
It will work for images embedded in PostScript, and resample them to different DPI if you ask (I think probably more for on-screen viewing and file size reasons than printing). I would be kind of surprised if it does anything as sophisticated as "B&W or color images interspersed on the page with 1bpp text" though (i.e. analysing full page images, locating and separating text and figure regions, and choosing different encodings for each). DjVu does do some things along those lines, but it's not widely supported like PDF.