Ideas, guides & product news

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Showing posts tagged printing · clear

qr code

Minimum QR Code Size Is a Module Size, Not a Code Size

There is no single minimum QR Code size. What decides whether a printed code scans is the size of one module. Here is how to work yours out.

Team JSKAPPS · Sep 29, 2026

passport photo

How many passport photos fit on an A4 sheet? (And why yours print the wrong size)

The answer is 30 — but only at the right margin, and only if the file you print carries a real print resolution. Here is the arithmetic, the six paper sizes compared, and the reason most home-printed passport photos come out too big.

Somnath Roy · Aug 20, 2026