Merge two PDF files by taking pages alternately from each | commonly used to recombine a double-sided document scanned as separate odd/even files.
Upload the two PDFs | typically your odd-page scan and even-page scan.
Shrivo interleaves them in order (page 1, page 1, page 2, page 2...).
Download the correctly interleaved combined PDF.
Use it specifically when a double-sided document was scanned as two separate single-sided files (fronts, then backs) and you need to interleave them back into original page order.
Yes | upload your odd/front-page file first and the even/back-page file second so the interleaving lines up correctly.
Both files should have the same page count for a clean interleave; mismatched counts can leave pages out of order.