Interleave PDF Pages
Interleave two PDFs page by page (fix duplex scans)
Drag & drop PDF here
or click to browse (multiple files)
Files are deleted automatically after 1 hour
About Interleave PDF Pages
PDF Interleave merges two PDFs by alternating their pages: page 1 from PDF A, page 1 from PDF B, page 2 from PDF A, page 2 from PDF B, and so on. This is the classic fix for duplex (double-sided) scanning — where you scan odd pages in one pass and even pages in another, producing two separate files that need to be woven back together. The optional 'Reverse second PDF' setting handles scanners that deliver even pages in reverse order.
How to use Interleave PDF Pages
Upload two PDFs
Upload the odd-pages PDF first, then the even-pages PDF.
Reverse second if needed
If your scanner delivered even pages in reverse order, enable 'Reverse second PDF'.
Download
Download the interleaved PDF with pages in the correct order.