[tex-live] ICC profiles for PDF/A compliance

Reinhard Kotucha reinhard.kotucha at web.de
Tue Sep 11 00:38:47 CEST 2018

On 2018-09-09 at 11:02:51 +0200, Zdenek Wagner wrote:

 > ne 9. 9. 2018 v 1:02 odesílatel Reinhard Kotucha <reinhard.kotucha at web.de>
 > napsal:
 > ...
 >     So if we don't find an ICC sRGB profile with an appropriate
 >     license we can create one ourselves with a license which makes
 >     everybody happy.  All we need is a specification of the .icc
 >     binary format.
 > Little CMS (LCMS) is a free OpenSource tool, information on the
 > .icc format can probably be found there and the specification is
 > hopefully freely available.

I found the specification at color.org.  But it's quite complex and
requires a lot of knowlege about colorimetry.

I also found some very useful programs at color.org.  Two of them are
very interesting: iccToXml and iccFromXml.  Since ICC profiles are
binary files, the most reasonable way to create them is write a
program in C, as assumed by the specification.  Everything is easier
with an XML file as a starting point.

The C sources of these tools are based on autoconf and compiling the
programs was quite easy on Linux.

It's very nice to be able to convert binary files to XML and vice versa. 

On my Raspberry I just installed the Debian icc-profiles-free package
and now there is a file


If Debian considers ghostscript/srgb.icc as free, isn't it free enough
for TeX Live as well?  The file contains

  "Copyright Artifex Software 2011"

Is this license appropriate for TeX Live?  I think so because
otherwise neither Debian nor TeX Live can provide Ghostscript.

Debian also provides a file


which obviously comes from LCMS and contains

  "no copyright, use freely"

Nicely said.  Sounds like "public domain" at a first glance.  But who
is the author and where does the stuff come from?

After all, I think that if all GNU/Linux distributions already provide
Ghostscript, there is no obvious reason not to ship a file which is
part of it with the pdfx package.


Reinhard Kotucha                            Phone: +49-511-3373112
Marschnerstr. 25
D-30167 Hannover                    mailto:reinhard.kotucha at web.de

More information about the tex-live mailing list