Alternate Merge PDF Pages
Weave the pages of two or more PDFs together in strict rotation: page 1 of every document, then page 2 of every document, and so on until the longest file is exhausted. It is the classic fix for scanned double-sided documents where odd pages live in one file and even pages in another — alternate merge rebuilds the natural order in one click. Shorter files simply drop out of the rotation when they run out of pages. Everything is assembled locally in your browser, so your scans never leave your device.
Choose files ordrag & drop here
.pdf · multiple files allowed
Processed locally in your browser — your files never leave your device.
How to alternate merge
- Upload two or more PDF files in the order they should rotate.
- Click "Alternate merge" — pages are interleaved A1, B1, A2, B2 and so on.
- Download the combined PDF with all pages in alternating order.
Frequently asked questions
What is alternate merging good for?
It is ideal for combining separate scans of the fronts and backs of pages, or any set of documents whose pages should rotate one-by-one instead of stacking file after file.
What happens when one file has fewer pages?
That file drops out of the rotation once exhausted, and the remaining files keep interleaving until every page of the longest document has been placed.
Are my documents uploaded to a server?
No. The merge runs entirely in your browser with client-side technology — files stay on your device from start to finish.