Do be careful, though, when collating PDFs with Preview. I've had several experiences where the resulting file works fine in Preview, but can't be opened by oth

Do be careful, though, when collating PDFs with Preview. I've had several experiences where the resulting file works fine in Preview, but can't be opened by other PDF readers, e.g. Acrobat Reader. Share the file with a non-Mac user and they'll be scratching their head… I have to do a lot of PDF manipulation for my work, and after some time I accepted, grudgingly, that there's no substitute for Acrobat Pro.