Turn a favourite photo into a wall-sized poster with an ordinary A4 printer.

A family photograph, a classroom diagram or a sign for your next event can deserve more space than a single sheet. PosterGrid divides your image into A4 pages that assemble into an A3 or A2 poster, directly from your Mac.

One-time purchase · US $2.99

US App Store, October 28, 2026. Local prices may differ; the store shows the current price.

Drop in the image, choose portrait or landscape, then adjust the overlap and cut marks. Inspect the page layout before printing, send it straight to your printer or keep a PDF for later.

A3 uses two A4 sheets; A2 uses four. Image resolution, printer margins and careful assembly all affect the final result. The Mac edition is a one-time purchase.

What can you do with it?

A3 and A2 layouts on A4 paper
Portrait and landscape
Adjustable overlap and cut marks
PDF export and direct printing

Watch the demonstrationAn edited walkthrough using real app screenshots. The video opens on YouTube.

What did we check?

The demonstration verifies a four-page PDF export. It does not include a physical printer test.

Frequently asked questions

Is this the same app on Mac and iPhone?

Mac and mobile editions may have separate store listings. Use the link for the platform shown on this page.

Where can I find the current price?

The App Store shows your regional price and purchase terms. The US price on this page is a dated reference.