Before you print
How big should it be?
Rule of thumb: printed width ≥ scanning distance ÷ 10. Pick the surface above and the studio sizes the code for you, then checks the printed module size against what a press can actually hold.
Questions people actually ask
Yes — free forever, at any resolution, with no watermark and no signup. UseQR is an open-source public good; static codes are generated entirely in your browser.
Never. A static QR code is just your URL encoded as squares — it works as long as your URL works, with no dependence on UseQR.
Yes, everything in the Design panel is free: logos, gradients, shapes, and labels. UseQR verifies the styled code still scans with a real decoder before you download.
Rule of thumb: printed width ≥ scanning distance ÷ 10. A code scanned from 1 m should be at least 10 cm wide. Use our size calculator for exact numbers.
Want the detail? How url / link QR codes work — the payload format, what scanners do with it, and where it breaks.