[wellylug] How to electronically modify a PDF to fax from GNU/Linux?

Valient Gough vgough at pobox.com
Sat Dec 20 21:03:51 NZDT 2003


I just had to do the same thing.  In my case someone sent me a DOC file,
so I used OpenOffice to save it to a PDF, then used pdftopbm (came as
part of xpdf RPM) to convert to a PBM graphics file.  Then I loaded the
file in Gimp along with a picture of my signature..  With Gimp, I loaded
the signature as a second layer of the image, scaled to the right size
and applied a layer mask to mask off everything but the signature ink
itself and had the layer applied in "darken only" mode so that it would
look natural on top of the existing lines on the page.  I saved it to a
TIFF file and uploaded it to my maxemail.com account to be faxed.  Total
cost to fax back a signed page to New Zealand from the US: $0.36.  Time
wasted: priceless. :-)

Valient

On Sat, 2003-12-20 at 06:44, Damon Lynch wrote:

> Hi,
> 
> I need to add my signature and check a box on a PDF document, and fax
> it.  Although it's easy to fax within GNU/Linux, I don't have a scanner
> (but I do have a scan of my signature); hence I want to electronically
> alter the image that will be faxed.
> 
> One "brute force" method I can use is to take a screen shot and edit the
> image in the Gimp.  Is there a more elegant way?
> 
> Thanks
> Damon
> 
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