Interleave PDF pages

Merge front and back scans — pages alternate A, B, A, B to rebuild a duplex document.

Front sides PDF (A)Drop a PDF here, or choose a fileBack sides PDF (B)Drop a PDF here, or choose a file

Back sides were scanned in reverse order (common with single-sided feeders)

Both files stay in this browser. Pages are copied alternately A, B, A, B… — the classic workflow for a duplex document scanned with a single-sided feeder.

Encrypted, signed, and form PDFs are not supported. Each file up to 25 MiB and 200 pages. If one document is longer its extra pages go at the end.

How to use

Choose the front-side PDF (A) and back-side PDF (B).
Check whether B was scanned in reverse order.
Interleave and download.

What it supports

Two PDFs, each up to 25 MiB and 200 pages. Pages alternate A1, B1, A2, B2…; a longer document's leftover pages are appended at the end. Encrypted, signed, and form PDFs are not supported.

Related tools

Related guides

Rebuild duplex pages from two one-sided scans