Posterize PDF

One big page, many small sheets

Posterize PDF is the inverse of n-up printing: instead of shrinking many pages onto one sheet, it splits one large page across many sheets. A poster designed at A0, a map exported at 36 inches wide, or architectural artwork becomes a grid of A4 or Letter pages you can print on any home or office printer and tape back together.

Each output sheet carries one tile of the original page, scaled so the tile fills the printable area. Because the tool embeds the original vector page rather than re-rendering it, text and line art stay sharp at any zoom — you are cutting the page, not photographing it.

Overlap and crop marks make assembly painless

Every interior tile repeats a strip of its neighbours — the overlap. Ten to twenty millimetres is the sweet spot: enough to align sheets by eye and hide small trimming errors, not so much that you waste paper. Set it to zero only if you plan to butt-join sheets with no trimming at all.

Turn on crop marks and each sheet gets hairline corner marks showing exactly where the tile edge falls. Trim to the marks, overlap the repeated strips, and the seams disappear. A small sheet margin keeps the marks and the tile edge inside your printer's printable area.

What you can control

Everything that decides how the poster comes apart and goes back together.

Private by construction

The whole job runs in your browser with pdf-lib: the file is never uploaded, so a confidential site plan or an unreleased poster stays on your machine. There is no page-count or file-size tier gate — the limit is your printer, not the tool.