Print-friendly CSS and usability

The CSS media type "print" allows authors to specify a stylesheet that is only used when printing. This can be very useful and allows for neatly styled printouts that hide non-essential parts of the page and only contain the main content. It's a great concept. The problem is what users expect.

In my experience, many people expect what comes out of the printer to match what they see in their web browser. If you load a print stylesheet by using media="print", you will confuse some people by making what they find in the printer possibly radically different from what they see on-screen.

Now, this has been discussed before. Cameron Adams wrote about it in CSS, printing and user expectation and there were discussions on the subject in Marko Dugonjić’s 10 Minutes to Printer Friendly Page and in my post Printing stylesheets.

Arguments both for and against using media="print" to automatically load print stylesheets are put forward in those discussions. A summary:

Benefits

Drawbacks

To me most of the arguments are pretty strong, and I can't see a clear winner.

Where are we now?

This was discussed a bit, but I don't think there was a consensus. What is the situation like now? Does anyone know if any research or user testing has been done on this? What about search engines? Will they consider a link to a print friendly version duplicate content, possibly penalising the site? If so, what should you do about it? What I've done is to add this to the print friendly version:

<meta name="robots" content="noindex,nofollow">

Anyone have any input on whether that will make any difference to Google and other search engines with regard to duplicate content?

That's a whole bunch of questions. Who's got any answers?

Posted on September 6, 2005 in Usability, CSS