Imagemagick's convert will do it both ways.

convert a.tiff b.pdf
convert b.pdf a.tiff

If the pdf is more than one page, the tiff will be a multipage tiff.

Aaron

-- 
Aaron Addison
Unix Administrator 
W. E. B. Du Bois Library UMass Amherst
413 577 2104



On Fri, 2013-04-26 at 16:08 -0400, Edward M. Corrado wrote:
> Hi All,
> 
> I have a need to batch convert many TIFF images to PDF. I'd then like to be
> able to discard the TIFF images, but I can only do that if I can create the
> original TIFF again from the PDF. Is this possible? If so, using what tools
> and how?
> 
> tiff2pdf seems like a possible solution, but I can't find a corresponding
> "pdf2tif" program that reverses the process.
> 
> Any ideas?
> 
> Edward