Export b/w PDF from InDesign color.

[paulc]

Can anyone tell me how to export a black and white PDF file from InDesign which has been rendered in color? Or do I have to go back to whatever placed files I have put in InDesign (in this case Illustrator & Photoshop)?

[Lukas Engqvist]

Two options:
1) when you print to postscript you can choose greyscale, then distil to a PDF.
2) create a colour PDF and use a preflight action to turn the PDF into grey.

[rich apollo]

You can't export directly to B/W as InDesign (as of CS3) doesn't recognize greyscale. I don't know if this is different in CS4.

You can very easily convert the PDF in Acrobat, however, via the Convert Colors dialogue or the Preflight panel.

[almaink]

Not changed in CS4 either. Easily converted in Acrobat, perhaps but not quickly. Certainly not if it's a 360 page perfect bound book! I know I did one last week and waited for almost 2 hours while it converted. Why is there still no grayscale option for direct PDF output? I can do it from other applications, so I know it's gotta be doable. The thing that kills me is this question has been asked many times, does Adobe listen or just pretend to? I'm beginning to wonder...