Reorder standard sequential PDF pages into print-ready saddle-stitch booklet signatures directly in your browser. Printing a folded brochure, church bulletin, event program, or zine requires reordering pages so that when double-sided sheets are stacked, folded down the center, and stapled, reading order proceeds sequentially from page 1 to the end.

This imposition tool pads your document to the nearest multiple of four pages and pairs opposing pages into 2-up landscape spreads (792×612 points for standard US Letter). On the first sheet, page 1 is paired with the final padded page on the front, while page 2 is paired with the penultimate page on the back. The resulting PDF can be printed directly using standard 2-sided duplex printer drivers on home or office hardware.

For example, an 8-page document is imposed into two physical landscape sheets: Sheet 1 pairs pages 8 and 1 on the front, with pages 2 and 7 on the back; Sheet 2 pairs pages 6 and 3 on the front, with pages 4 and 5 on the back.

All PDF parsing, page embedding, and signature imposition execute entirely client-side using pdf-lib in your local web browser. Your private documents, event bulletins, and creative zines are never uploaded to any remote server.