How to make a half-fold zine from a PDF

A half-fold zine is the simplest self-published booklet: print on landscape paper, fold the stack along the long axis, staple along the fold. The page-order rearrangement that makes the booklet read correctly after folding is called imposition; this guide walks through the practical workflow using Zine Creator.

What you need

A PDF with the pages of your zine. Portrait-oriented source pages work best for the resulting booklet pages.
A printer. Auto-duplex is convenient but not required - any printer works if you're willing to flip the stack and feed it back through for the second side. See the printer guide for what to look for if you're picking one.
Paper in your sheet size (typically A4 or Letter). Weight and finish matter more than you'd think - the paper guide covers the tradeoffs.
A stapler that can reach the fold. A regular desktop stapler won't work - its throat is shorter than half the long edge of A4 / Letter, so the jaw can't reach the spine of a folded booklet. You need a long-arm, a 90-degree / swivel, or a dedicated saddle stapler; the tools guide covers the fold-alignment tradeoffs between them.
Optional but worth having: a bone folder for crisp creases and a paper trimmer or craft knife for flushing the open edge after folding - all in the tools guide.

Step 1: Prepare your PDF

The page count should be a multiple of 4 (every sheet holds 4 source pages). If it isn't, Zine Creator will pad with blank pages automatically, or you can enable Mirror Cover to use a flipped copy of page 1 as the back cover.

For a 16-page zine you'll print 4 sheets of paper double-sided. For 32 pages, 8 sheets. And so on.

Step 2: Upload and configure

Drop your PDF onto Zine Creator. Once it's read, the layout panel becomes active. Click Half-fold booklet.

In the studio:

Verify the page range covers what you want.
Set sheet size (A4 default; Letter common in the US).
Leave Scale to fit on unless your source already matches the half-sheet aspect ratio.
Set Margin to 5 mm or whatever your printer needs - many home printers can't print borderless.
Optional: enable Cut marks to mark the trim line, useful if you'll cut the outer edge after folding.

Step 3: Print

Download the imposed PDF. In your print dialog, set:

Orientation: Landscape.
Sides: Two-sided / duplex, if your printer supports it.
Binding edge: Long-edge (default in Zine Creator).
Scale: 100% or "Actual size". Do not let the dialog re-scale.

Long edge vs short edge

Edge-flip has nothing to do with where the spine lands - the spine of a half-fold booklet always runs down the long axis, regardless of this setting. It's purely about how the paper gets turned between side 1 and side 2, and therefore whether the back side needs to be pre-rotated 180° so the content comes out right-way-up.

Long-edge: paper flips around its long edge between sides (like turning a book page). Zine Creator's default. The back side is pre-rotated 180° in the imposed PDF to compensate.
Short-edge: paper flips around its short edge between sides (like flipping a calendar page). The back side is not rotated in the PDF.

For auto-duplex, set the printer driver to match Zine Creator's edge-flip setting (long by default). If your back pages come out upside-down after folding, the driver is interpreting "long" and "short" the opposite way from the spec - switch Zine Creator's edge-flip to Short edge, re-download, and try one sheet. Faster than fighting the driver.

For manual duplex, long-edge is usually the better choice. When you flip the stack to feed it back through for the second pass, flipping along the long edge means the same short edge of the paper still enters the printer first. The feed rollers grab the same edge twice, so the second side lands in the same position as the first. Flipping along the short edge swaps which edge feeds first, and any tolerance in the feed rollers shows up as a left-right shift between the two sides - small but visible at the fold.

Manual duplex (no auto-duplex printer)

If your printer can't do automatic duplex, the workflow is:

Print only the odd output pages first ("Odd pages only" in most print dialogs).
Take the stack out of the output tray. Flip it along the long edge - front becomes back, top becomes bottom.
Put the stack back into the input tray. Test with one sheet before committing the whole job.
Print the even pages. If your printer outputs face-up, print them in reverse order so the stack ends up correctly collated.

Many drivers have a "manual duplex" mode that prompts you to flip at the right moment. The printer-settings guide has more detail on troubleshooting upside-down or out-of-order pages.

Step 4: Assemble

Two ways to fold, depending on what's on the pages:

Fold each sheet individually, then nest them in order with sheet 1 on the outside. Recommended for graphic-heavy zines: each sheet can be folded precisely on its own centerline, so full-bleed images line up edge to edge across the spine. Stacking and folding the whole pile at once pushes inner sheets outward (the same "creep" you trim later) and the fold drifts off the centerline by a millimetre or two on the inner sheets - invisible with text, very visible with graphics.
Stack and fold the whole pile at once: faster, fine for thin text-heavy zines where small fold drift won't show.

Either way, a bone folder makes the crease noticeably crisper than thumb-pressure alone, and pre-folding also helps with stapler alignment (the tools guide covers why).

Fold the sheets (individually or as a stack, per above).
Nest them in order with sheet 1 on the outside.
Staple along the fold. Two staples evenly spaced is the standard "saddle stitch" - see the tools guide for the tradeoffs between stapler styles.
Optional but recommended: trim the open edge with a paper trimmer or a craft knife against a steel-edged ruler. See Creep and shingling below for why this matters and how to handle it cleanly.

Creep and shingling

When you nest folded sheets inside each other, every inner sheet has to wrap around the paper of all the sheets outside it. Each successive inner sheet's outer edge sits a small amount further out than the sheet above it. Look at a finished booklet edge-on and the inner pages visibly stick out further than the outer pages. This effect goes by two names in print shops, both meaning the same thing: creep (the inner-page edges creep outward) or shingling (the page edges form overlapping shingles).

The geometry: with sheet thickness t and total nested sheet count N, the innermost folded sheet's open edge sits about t × (N - 1) / 2 further out than the outermost sheet. For a 32-page zine on 100 gsm paper (sheet thickness ≈ 0.1 mm, 8 nested sheets), that's about 0.35 mm of creep at the innermost spread. At 64 pages on the same paper, about 0.75 mm. Heavier stock multiplies this; 200 gsm covers double the per-sheet thickness.

Three ways to handle it, in increasing order of precision:

Trim flush after binding. Bind the booklet first, then run the open edge through a paper trimmer or a craft knife against a steel-edged ruler. All inner pages get cut back to the line of the outermost page. The outer-edge margin on the innermost pages shrinks slightly, but the overall booklet ends up with a clean, straight outer edge. This is the standard home and small-print-run approach and is enough for almost every zine workflow.
Plan extra outer margin. Design with a noticeably wider outer margin on every page so the inner-page creep eats into unimportant white space rather than nudging content close to the trim line. Cruder but works without a trimmer; useful for short text-only zines on thin paper.
Creep compensation in the imposition (what professional publishers do). Shift each page's content toward the spine by an amount proportional to its nesting depth, so after trimming the visible margin is uniform across the whole booklet instead of the inner pages losing more margin than the outer ones. Standard in InDesign and Affinity Publisher under names like "Creep" or "Shingle". Zine Creator does not currently apply this automatically; for most home zines on 100 gsm with up to 32 pages it is not worth the complexity, but for thicker stacks (≥ 40 pages, or heavier stock) it starts to be visible enough that compensation in the imposition pays off.

That's the entire workflow. The paper, printer, and tools guides cover the longer-form tradeoffs; printer settings covers troubleshooting upside-down back pages and borderless drift.