Alternate PDF Pages

Combine front and back scans from exactly two PDFs. Reverse the second file when its pages were scanned backwards.

Local limits: Max files: 2 / Max single file: 10 MB / Max total size: 20 MB

Exactly two PDFs, up to 10 MiB each and 200 pages total. Unmatched pages are appended; output is limited to 40 MiB.

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A practical guide

Alternate PDF Pages: a worked example

  1. Choose exactly two PDFs: fronts first, backs second.
  2. Select the reverse-second-file mode if the backs are scanned backwards.
  3. Convert or inspect, review the result and save it if needed.

Try this example

Fronts 1, 3, 5 and backwards-scanned backs 6, 4, 2 become 1, 2, 3, 4, 5, 6 when the second file is reversed.

Before

  • Fronts 1,3,5
  • Backs 6,4,2

After · one PDF

  • 1
  • 2
  • 3
  • 4
  • 5
  • 6
Input and expected output for this operation. Illustrative example.

Before you start: Combine front and back scans from exactly two PDFs. Reverse the second file when its pages were scanned backwards.

Continue with Merge PDF
What you get

Combine front and back scans from exactly two PDFs. Reverse the second file when its pages were scanned backwards.

Limits and important details

Alternate: exactly two PDFs, 10 MiB each, 200 pages total and 40 MiB output. No compression or guaranteed bookmark, interactive-form or digital-signature preservation. Password-protected PDFs are unsupported. Check page order before sharing.

Example

Fronts 1, 3, 5 and backwards-scanned backs 6, 4, 2 become 1, 2, 3, 4, 5, 6 when the second file is reversed.