Combine front and back scans into one PDF

Scanned all the fronts, flipped the stack and scanned the backs? Add both files and the backs are reversed automatically, so every page lands in order.

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Add two or more PDFs. Pages are taken one from each file in turn.

Nothing is uploaded. Your files stay private.

Popular uses

Opens the tool with the right settings already chosen.

How to combine odd and even page scans

Three steps, about ten seconds.

  1. 01

    Add your PDFs

    Drop two or more files. Drag them into order: file A comes first.

  2. 02

    Reverse if needed

    Turn on Reverse order for a file scanned last page first.

  3. 03

    Download

    Press Mix PDFs to save the combined file.

Rebuilding a double-sided scan

Scanners that only do one side leave you with two files: the fronts (1, 3, 5…) and the backs, often in reverse (6, 4, 2). Add the fronts first, then the backs.

The backs are reversed automatically and the pages are interleaved, so every page lands in order. Pages are copied without being re-saved, so nothing loses quality.

If a back page was blank, remove it afterwards with Delete pages.

More about alternate & mix pdfs and all its options

Frequently asked questions

Which file do I add first?

The fronts. The second file is treated as the backs and reversed before mixing.

How do I combine front and back scans into one PDF?

Add the fronts file, then the backs file, and turn on Reverse order for the backs, or open the Double-sided scan preset, which does it for you.

What's the difference from Merge PDF?

Merge puts whole files one after another. Alternate & mix takes one page from each file in turn.

Can I mix more than two files?

Yes. Pages are taken from each file in the order shown.