3

What I want to do is convert a pdf file that has colorful fonts to one that all it's fonts' colors are black.

This is not a duplicate of this question here. I don't want greyscale fonts I want them to be only black. gs with psmono device is not an option since it was removed in later ghostscript releases.

Community
  • 1
orestisf
  • 197
  • 1
  • 11

1 Answers1

2

Option 1:

convert -monochrome in.pdf out.pdf

Option 2:

You can still download Ghostscript 9.07

https://ghostscript.com/Ghostscript_9.07.html

Compile it from source and make install the result.

In v9.07 the psmono output device still works. If you want to use the new v9.2+ version also, do not install the compiled v9.07 version but use it directly.

e.g.

./gs907 -sDEVICE=psmono -o out.ps -f in.pdf

Note: the PSMono device will flatten your file and make the content text not selectable.

Ben
  • 36
  • 2
  • 2
    In October 2018 you can get GS 9.07 source from here: https://sourceforge.net/projects/ghostscript/files/GPL%20Ghostscript/ – user3486184 Oct 18 '18 at 08:48
  • Using `psmono` I also get *terrible* (pixely) results and in fact a greyscale pdf or ps file "converted" this way still contains greyscale text (not black)... (Unfortunately, [my own/adapted solution](https://askubuntu.com/q/727906/86044) stopped working for me on a new machine.) – Earthliŋ Mar 30 '20 at 12:40