Make a QR code that still scans

Most free QR generators let you drop a logo in the middle and hand you back a code nobody's phone can read. This one won't. Add a centre logo and error correction locks to its highest level automatically; push the logo past a safe size and the control simply won't let you. Pick colours too close together and you'll see it before you download, not after you've printed a thousand flyers. Export as PNG or as vector SVG for print. Everything happens on your device.