How can I increase contrast on a multi-page PDF?
February 22, 2009 8:24 AM Subscribe
How can I quickly and easily increase the contrast on every page of a PDF?
posted by Outis to computers & internet (6 answers total) 5 users marked this as a favorite
I have a PDF that is 200 pages long in which the paper rendered from the scan somewhat grey and some of the text from the opposite side is still visible. I know I just need to increase the contrast a little and it would taken care of. How can I do this? I have many PDF files like this so it's merely a test run.
I'm also hoping to remove some of the annotations someone made to the text before it was scanned. Other suggestions?
I'm on a Mac using Acrobat and and I've got Photoshop if it's absolutely necessary.