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Booklet PDF
FreeSaddle-stitch imposition — reorder pages so you can print double-sided, fold the stack in half, and staple along the fold to make a booklet.
What you'll get: a saddle-stitch imposed PDF — print double-sided, fold the stack in half, staple along the fold to make a booklet. Pages auto-padded to a multiple of 4. For another use, try N-up PDF (multi-up tiling).
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Clean output, no branding, no daily limits.
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Why people make saddle-stitch booklets
Saddle-stitch booklets are the simplest, cheapest way to bind a multi-page document — print double-sided, fold the stack in half, staple along the fold. Every program, conference handout, recipe collection, and small zine has used this format for a century. Booklet PDF reorders the pages so the math works out.
Event programs & handouts
Wedding programs, conference agendas, school recitals, church bulletins. Drop the source PDF, fold the printed sheets, staple — done in 15 minutes.
Recipe books & zines
Self-published booklets, family cookbooks, fan zines. Saddle-stitch is the format every small print run uses; this tool gives you the pre-press output.
Children’s storybooks
Print a homemade storybook on letter-size paper (8 source pages → 2 sheets). Folds open into a 5.5×8.5 booklet — a perfect kids’ book size.
Workshop materials
Course handouts, conference workshops, training kits. Booklet format is more polished than a stapled stack of single-sided handouts.
Sales & marketing collateral
Sample brochures, capability decks, leave-behind one-pagers. Saddle-stitch on coated stock looks more professional than coil binding for short runs.
How Booklet PDF works
Three steps, no signup, no uploads.
- STEP 1Drop your PDFSource pages auto-pad with blanks at the end so the total is a multiple of 4 (each output sheet holds 4 source pages — 2 front, 2 back).
- STEP 2Pick output paperLetter / A4 / Legal / A3 — all in landscape. Each output sheet holds two source pages side-by-side. Optional faint fold-line guide on each sheet for clean folding.
- STEP 3Print, fold, staplePrint double-sided with flip-on-long-edge. Stack in order. Fold the entire stack in half. Staple along the fold (saddle stitch). Done.
What makes pdfcraft ai different
- Same engine Chrome usesPDFium is Google's PDF engine — the one that powers Chrome's built-in PDF viewer. We compile it to WebAssembly so it runs in your browser at near-native speed.
- 100% local processingMost free PDF tools upload your file to a server, process it, and stream the result back. We don't. Your file lives in your browser tab and never touches our infrastructure. Verifiable in your browser's Network panel.
- No watermark, no signup, no daily limitConvert 1 PDF or 1,000. We don't gate on volume because there's nothing to gate on — the engine runs on your machine.
- Honest about limitationsWhen something the tool can't do (encrypted PDFs, cross-reference streams), we tell you clearly instead of failing silently. Same for partial results: sampled vs exact, embedded vs not.
- Open standards, free enginesPDFium is BSD/Apache licensed (free for any use). We don't pay vendor license fees and pass that savings on to you (and to ourselves) as a free, ad-supported tool with no upgrade-to-pro pressure.
Frequently asked questions
What's the page-reorder rule?
For an N-page document (padded to a multiple of 4), output sheet i (1-based) carries [page N-2(i-1), page 2(i-1)+1] on the front and [page 2(i-1)+2, page N-2(i-1)-1] on the back. So sheet 1 front = [pageN, page1], sheet 1 back = [page2, pageN-1], etc. When folded, the source order reads cleanly from front to back.
Why are sheets in landscape?
Each sheet holds two portrait source pages side-by-side. When you fold the sheet vertically (along the centerline), each half becomes a portrait page in the final booklet. Letter landscape = 11×8.5 → folds to 5.5×8.5 booklet pages. A4 landscape = 11.69×8.27 → folds to A5 booklet pages.
What's the “flip-on-long-edge” print option?
When printing double-sided on landscape sheets, the printer needs to know which edge the page rotates around. “Flip on long edge” (sometimes called “long-edge binding” or “portrait binding”) is the right setting for this output — both halves end up oriented the same way after folding. The wrong setting (“flip on short edge”) prints the back upside-down relative to the front.
What if my source isn't a multiple of 4 pages?
We auto-pad with blank pages at the end so the math works out. A 10-page source becomes 12-page padded → 3 sheets. The padding always lands at the end so the flow of your content isn't disturbed.
Why is there a faint line down the center of each sheet?
That’s the fold-line guide — a 0.5pt line at 15% opacity. Helps you fold cleanly without measuring. Toggle it off in the Options panel for production print where you want a perfectly clean sheet.
Is anything uploaded?
No. Saddle-stitch imposition is pure pdf-lib (page tree manipulation, no rasterization). Runs entirely in your browser. Verifiable in DevTools → Network.
Want to print color booklets cheaper?
Convert your source to grayscale first to cut color-printing costs by 5–10× per page. Pairs perfectly with booklet imposition for an ultra-cheap print job.
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Use cases for this tool
Step-by-step workflows that put this tool to work.