I have a PDF file of 400 pages made up of scanned pages. But, the orientation of the PDF file is such that half of the pages are rotated to the right, while half of them are rotated to the left. I mean to say that if page number 1 is rotated 90 degrees towards left, page number 2 is rotated 90 degrees towards right. And this pattern continues upto the last page.
Is there a way to rotate the pages to make them upright? Any help in this regard will be appreciated.