[texhax] Hyperref and print

Michael Barr barr at math.mcgill.ca
Tue Jul 14 13:53:27 CEST 2015

I experimented with this:




\section{test section}\label{test}

This a test to see whether the label \ref{test} prints correctly.


and got the same result as without the option line, a red box around the reference.  When I replaced the option line by 


I got the same result as without the ocgcolorlinks=true.  That is, the reference showed on the screen in the very light color that I chose to heighten the effect and printed in exactly the same way.  So the net effect of ocgcolorlinks appears to be nil.  Incidentally it apparently doesn't appear at all in the hyperlinks documentation.  I am using TeXLive 2014 with Win 7, but that doesn't matter because anything we use will have to work for everybody.  

The journal, Theory and Applications of Categories is distributed online and primarily read that way (I assume) but some will want to print it out.


----- Original Message -----
From: "Paul Gessler" <pdgessler at gmail.com>
To: "Michael Barr" <barr at math.mcgill.ca>
Cc: "<Unknown>" <texhax at tug.org>
Sent: Monday, July 13, 2015 8:32:37 PM
Subject: Re: [texhax] Hyperref and print

Hi Michael,

You can also use the ocgcolorlinks option when loading hyperref. This
puts the link colors in Optional Content Groups (OCGs) inside the PDF.
When viewed on-screen, the color is shown, but when printed, the link
appears black. I've used it with success in many documents.

The disadvantage is that the package code does not support linebreaks
within URLs when this option is set. A workaround for this limitation
was devised by Ben Lerner; the code for which is available at TeX
Stack Exchange if you require it:
http://tex.stackexchange.com/a/47309/21344 . Please take note of the
caveats mentioned in the answer if you decide to use the code. They
could prove to be a serious drawback in a high-volume production
environment such as a journal.

Good luck with the experiments!


On Mon, Jul 13, 2015 at 7:11 PM, Reinhard Kotucha
<reinhard.kotucha at gmx.de> wrote:
> On 2015-07-13 at 19:00:17 -0400, Michael Barr wrote:
>  > The journal I do some of the TeXnical editing for is experiment
>  > with \hyperref.  We like the colorlinks=true option and have
>  > experiment with different colors.  But if the link is in a color,
>  > B&W printers, at least the ones we have experimented with, print it
>  > lighter than the surrounding text.  Is there any of doing it so
>  > that the hyperref code displays onscreen, but is suppressed in the
>  > print?
> There are at least two solutions:
>  1. avoid colorlinks=true for printing
>  2. use darker colors
> It'a a matter of fact that most colors defined by hyprerref are too
> bright.  They are even much too bright for display on screen.
> The best thing you can do is to replace hyperref's default colors by
> darker ones.
> Dark colors are handled more gracefully by B&W printers.
> Regards,
>   Reinhard
> --
> ------------------------------------------------------------------
> Reinhard Kotucha                            Phone: +49-511-3373112
> Marschnerstr. 25
> D-30167 Hannover                    mailto:reinhard.kotucha at web.de
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