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location Germany
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visits member for 4 years, 5 months
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I happen to know a thing or two about printing, PDF, PostScript, PJL, Fonts and related stuff.

Also familiar with some bits and pieces of Linux, Unix, Samba and Solaris printing. Not to forget bash programming and Windows cmd.exe batch scripting. I also do consultancy in these topics.

If you want, I share some of this knowledge here and on Stackoverflow (SO). Just click to browse for all.

Stackoverflow.com:

Superuser.com:

Serverfault.com:


Oct
10
revised Use Ghostscript, but tell it to not reprocess images?
attempt for a better explanation
Oct
10
revised How to convert a PDF document to an older version
add command line example for Ghostscript
Oct
8
revised How can I programmatically change/protect text contents in a PDF so it's no longer copyable text?
added 162 characters in body
Oct
8
revised How can I programmatically change/protect text contents in a PDF so it's no longer copyable text?
Not only 'rasterization' will achieve the goal -- 'vectorization' also will!
Oct
8
revised How can I programmatically change/protect text contents in a PDF so it's no longer copyable text?
Added a few screenshots
Feb
11
revised How to extract image from PDF file
edited body
Feb
11
revised How to extract image from PDF file
Comment on ComFreek's edits
Sep
2
revised PDF has an extra blank in all words after running through Ghostscript
update to reflect the recent fix of the bug mentioned
Feb
24
revised How to extract image from PDF file
Update to answer
Aug
7
revised In gimp, why “save as” ps and “print to file” in pdf?
added 292 characters in body
Aug
6
revised How to insert white space with imagemagick?
remove accidental 'montage'
Jul
28
revised In gimp, why “save as” ps and “print to file” in pdf?
added 1 characters in body
Jul
10
revised How to create a transparent image with GraphicsMagick CLI?
improve formatting
Jul
9
revised How to insert white space with imagemagick?
added 3 characters in body; added 1 characters in body
Jul
8
revised How can I deskew and crop PDFs made from scanned pages *automatically*?
(Maybe this pacifies those moderators who felt the previous version was 'not constructive'...)
Jul
8
revised How can I deskew and crop PDFs made from scanned pages *automatically*?
deleted 10 characters in body
Jul
8
revised How can I deskew and crop PDFs made from scanned pages *automatically*?
Add [imagemagick] tag, because the problem can possibly be solved with this tool.
Jul
7
revised How can I deskew and crop PDFs made from scanned pages *automatically*?
added 2 characters in body
Jul
6
revised How do I change the canvas size of a PNG with ImageMagick (GraphicsMagick)? (How to pad with transparency?)
added 97 characters in body
Jul
6
revised How do I change the canvas size of a PNG with ImageMagick (GraphicsMagick)? (How to pad with transparency?)
added 74 characters in body