Organize
Collate Scans
Interleave front and back scanned pages into order.
Front sides
Drop files here, or click to browse
PDF file only · stays on this device
Back sides
Drop files here, or click to browse
PDF file only · stays on this device
Private by design. Combine two scan batches — odd pages scanned first, even pages scanned in reverse — into one correctly ordered PDF. Your file is processed entirely in this browser tab using WebAssembly — it is never uploaded anywhere, so it stays yours even on a shared or offline computer.
Frequently asked questions
- Why would the back sides be in reverse order?
- Many duplex scanners feed the back sides through without re-flipping the stack, so they come out in reverse order. Check the box to account for that.
- What if my scanner already produces back sides in the correct order?
- Uncheck the "scanned in reverse order" option and the pages will be interleaved as-is.
- What if the two files have a different number of pages?
- Pages are interleaved as far as both files go, then any extra pages from the longer file are appended.