Alternate & Mix PDF

Combine two PDFs by alternating their pages (A1, B1, A2, B2…). Ideal for merging odd and even scanned sides. Free and unlimited.

How to alternate & mix pdf

  1. Add two PDFs (first, then second).
  2. Tick "reverse second" if your back pages are scanned in reverse.
  3. Click Mix PDFs — the interleaved file downloads.

When do I reverse the second file?

When you scan all front sides, then flip the stack and scan all backs — the back pages come out reversed, and this option fixes the order.