How can I convert a pages color document to a PDF Black and White doc.

Question

How can I convert a pages color document to a PDF Black and White doc.  Or, covert the color to B&W in a new doc?

Answer 1

> How can I convert a pages color document to a PDF Black and White doc.  Or, covert the color to B&W in a new doc?
The general idea is that you colour correct photographs once, archive, and convert with or without colour changes. The archived photograph is unchanged - or we would be colour correcting the same photographs again and again and again.
If you have a photograph with a corrected exposure, you can open the photograph in the Apple ColorSync Utility, apply a colour space conversion to a grayscale appearance using the preinstalled ICC profile, save the photograph under another name, and place that in your pagination.
If you have a paginated document with corrected exposures, and any such non-scalable bitmap or scalable spline graphics as you have chosen to add, you can render the pagination as a whole to PDF through the same ICC profile, carrying out the same colour space conversion on any and all objects.
Caveat: If you intend the pagination for certain processes, in particular offset lithography, then you are probably  expected not to render the type to grayscale, but rather to render it to single ink solid black. No software can determine what printing process you intend, you have to understand a bit about printing, and how to set up general colour space conversions in software. Ask your prepress provider, and if the answer is not prompt and proficient, pick another provider.
/hh