I’d like to select every 3rd page so I can delete them all at one time. Is there a way to do this? I see that if I use “Select Alternating Pages” more than once it seems to exponentially select pages, but only in even number increments.
Why I need this: I got a PDF that was made with facing pages. I selected all pages and split them, so now there are 186 pages. However, in order to get the center (split) line in the right place, it had to be offset a bit. Thus every other page came out wider than the previous one. So…I selected every other page (Select Alternating Pages) and did another vertical split to get the size of all the pages (approximately) the same. Result: now every third page in the PDF is a small narrow white strip I need to delete. Is there a way to select them so I can delete them?