Field guides

QR code guides

Notes on making QR codes that look right, scan reliably and tell you something useful after they are printed.

  • 6 min read

    How to put a logo in a QR code without breaking it

    A logo covers real data in a QR code. Here's how much you can cover, why error correction saves you, and the design choices that keep a branded code scannable.

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  • 6 min read

    Why your printed QR code won't scan

    Six reasons a QR code that looked fine on screen fails on paper: size, quiet zone, contrast, inversion, substrate, and error correction. Plus the size math that prevents most of it.

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    • qr code print size
    • minimum qr code size
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  • 6 min read

    Static vs dynamic QR codes: which one do you actually need

    Static QR codes are free and permanent. Dynamic codes cost money and can be edited after printing. Here's how to tell which one your project needs before you send it to a printer.

    • static vs dynamic qr code
    • what is a dynamic qr code
    • can you change a qr code after printing
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  • 6 min read

    How to make a WiFi QR code that actually connects people

    Make a free WiFi QR code that joins guests to your network with one scan. How the WIFI payload works, why WPA2 vs WPA3 matters, and how to print one that survives a coffee shop wall.

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Put any of this into practice

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