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Browser Booklet Imposition Layout Tool

Impose any sequential PDF into 2-up saddle-stitch zines or multi-signature bookbinding sheets with automatic 4-page blank padding and paper-thickness creep compensation.

1. Source PDF & page count

zine-manuscript-16p.pdf (sample)

2. Signature & Creep Setup

Sheets per signature and paper thickness (gsm or mm) — the center-page shift is computed automatically

sheets
gsm

How booklet imposition & creep math work

Every folded sheet holds 4 booklet pages (2 on the front, 2 on the back). A document of N pages is first padded with blank pages at the end to N_pad = ceil(N / 4) × 4.

For a signature containing S = sheets_per_sig folded sheets (M = 4S pages), each sheet of caliper thickness t (where t ≈ GSM × 0.00125 mm) folds into 2 paper layers at the spine. Nested inner sheet k (k = 0 .. S − 1) is pushed outward by Δ_k = k × 2t mm, so either the inner pages must be pulled inward by Δ_k or the outer sheets must be shifted outward by (S − 1 − k) × 2t mm to keep fore-edge margins aligned after guillotine trimming.

Result

A5 Booklet · 1 signatures

Physical sheets required
4 sheets
8 duplex sides (16 imposed pages)
Paper thickness & step
0.125 mm
100 gsm · 2t = 0.25 mm/sheet
Middle page max creep
0.75 mm
Across 1 signature
Exact multiple of 4 pages
Your 16-page document fills 4 sheets with zero blank padding required.
ProCreep compensation$14.99 once

Included in Pro. Unlock once, keep it on this device.

Visual 2-up sheet pairing preview

Front and Back page pairings across the center spine fold (with creep shift drawn)

Sheet #1 (Sig 1 · 1/4)pp. 1/2 shift out 0.00 mm
Front-L: P16|Front-R: P1
Back-L: P2|Back-R: P15
Sheet #2 (Sig 1 · 2/4)pp. 3/4 shift out 0.25 mm
Front-L: P14|Front-R: P3
Back-L: P4|Back-R: P13
Sheet #3 (Sig 1 · 3/4)pp. 5/6 shift out 0.50 mm
Front-L: P12|Front-R: P5
Back-L: P6|Back-R: P11
Sheet #4 (Sig 1 · 4/4)pp. 7/8 shift out 0.75 mm
Front-L: P10|Front-R: P7
Back-L: P8|Back-R: P9
SheetSigFront (L | R)Back (L | R)CreepFolding & Collation Instruction
#1S1P16 | P1P2 | P150.00 mmSig #1 outer sheet (stack after Sig #1)
#2S1P14 | P3P4 | P130.25 mmSig #1 inner sheet #2 — nest inside Sheet 1
#3S1P12 | P5P6 | P110.50 mmSig #1 inner sheet #3 — nest inside Sheet 2
#4S1P10 | P7P8 | P90.75 mmSig #1 inner sheet #4 — nest inside Sheet 3
4 sheets1 sigs16 src pages0 blanksSample readyPrint 2-sided (short-edge flip)
Built from user complaints

What people hate about the other tools

We read the reviews of the incumbents before writing this page. Every complaint below maps to a decision in the tool above.

  • BookletCreator caps its free trial at 16 pages, while Montax Imposer locks free users to A4 output and blocks A3 or Tabloid folded booklet exports.
    r/bookbinding & r/pdf (Reddit) · 16-page & A4-only free limits
    In this toolImposes unlimited pages onto A4, A3, Letter, or Tabloid sheets for free in your browser with no watermark.
  • Duplex printing constantly flips back sides upside down due to confusing short-edge vs long-edge settings or manual odd/even sheet reloading on home printers.
    r/bookbinding & r/zines (Reddit) · upside-down duplex printing
    In this toolShows front/back sheet orientation in 3D, exports a 4-page test sheet, and splits odd/even PDFs for manual feed.
  • Adobe Acrobat and InDesign trap booklet imposition inside the Print dialog, making it painful to simply export a ready-to-print saddle-stitch PDF for a shop.
    r/indesign & r/printing (Reddit) · trapped in desktop print dialogs
    In this toolDirectly exports a print-shop-ready 2-up imposed PDF file in one click without installing desktop software.

One-line difference: Browser-local PDF booklet imposer with unlimited pages, A4/A3/Letter/Tabloid support, 3D fold preview, and duplex split.

How this is paid for

Free forever, Pro when you need the paperwork

Free + one-time Pro

Free no signup, no card

  • Unlimited-page saddle-stitch imposition for A4, A3, Letter & Tabloid
  • Auto 4-page blank padding & 8-page single-sheet mini-zine mode
  • 3D fold preview, 4-page test sheet & manual duplex front/back split

Pro $14.99 once

  • Multi-signature bookbinding mode with custom sheets per signature
  • Paper thickness creep (shingling) millimeter shift compensation
  • Printer crop marks, center fold lines, bleed & custom trim presets

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