Roundtoe Tessera

QR code generator

Make a code for a link, a WiFi network, a contact card and more. Nothing to sign up for, nothing stored. Download it and it is yours.

Got a code already? See how it works, layer by layer.

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Higher tolerance keeps the code readable when it is scuffed, folded or partly covered, at the price of a slightly denser pattern.

Made a code and need to change where it points later, without reprinting it? That is what Tessera does.