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Combine scanned fronts and backs

Interleave two PDFs of scanned fronts and backs. Reverse the backs when needed, restore the reading order and download a combined PDF on your device.

2 PDFs → PDF

Combine scanned fronts and backs

When checked, the first front is followed by the last page of the backs PDF. Sources must have the same number of pages, or just one extra front, which stays at the end. Up to 50 MB and 500 pages per source.

Choose both PDFs.

Steps, formats and limits

How to use this tool

  1. Choose the PDF of fronts and the PDF of backs.
  2. If the backs were scanned in reverse order, select that option. Sources must have equal page counts or one extra front.
  3. Combine the files, check the page order, then download or continue with the PDF tools.

How are the pages ordered?

Front 1, back 1, front 2, back 2, and so on. Reverse order starts with the last back. One extra front is allowed and stays at the end. Other page-count mismatches are rejected.

What are the limits?

Up to 50 MB and 500 pages per source, 1,000 pages in total and a 150 MB result. Password-protected PDFs require an unlocked copy.

Are forms and digital signatures preserved?

Page assembly may remove fillable fields and does not preserve the validity of digital signatures. Keep signed originals. Complete forms and export flattened copies before processing them.

Are my files uploaded?

No. Conversion happens in your browser. Download results before closing the tab or switching language. Original files remain unchanged.

Read the practical guide: Combine separately scanned front and back pages (new tab)

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