[gentoo-user] Re: PDF: convert to grayscale

[nunojsilva@ist.utl.pt (Nuno J. Silva)]

(Sorry for the late replies)

Matthew Summers <quantumsummers@gentoo.org> writes:
> <paul.hartman+gentoo@gmail.com> wrote:
>> On Tue, Feb 8, 2011 at 7:50 AM, Nuno J. Silva <nunojsilva@ist.utl.pt> wrote:
>>> Does anyone know a tool (other than ghostscript) that is able to convert
>>> a PDF (or postscript) to grayscale?
[...]
> Use the GIMP, Luke. I have to do this all the time with forms and
> such. The GIMP imports PDF files nicely, and I usually print the file
> to PDF after I am done. Now, if you have a many page document, the
> GIMP will import each page as a layer which can make it a pain to have
> to manually print each layer as a separate pdf, but ya do what ya
> gotta do. I also like PDFShuffler for managing/mangling pdf files. Its
> in portage by the way.

GIMP will make it raster, and my goal was keeping it vectorial.

BTW, if you happen to, for some reason, convert pdf to raster
frequently, see ImageMagick's convert, which for some output formats (at
least png and jpeg) does a batch export of all pages (as separate
files). It will probably be handy when the PDF has many pages.

-- 
Nuno J. Silva
gopher://sdf-eu.org/1/users/njsg