Which addresses are valid?

Dogecoin addresses start with D, A, or 9. UseQR validates the shape and tells you exactly what to fix if it doesn't match.

Is there a fee or a signup?

Neither. UseQR is free forever with no account, no watermark, and no limits.

Yes — export SVG or PDF at any size. Use the size calculator to pick a printed width for the distance people will scan from.

A scannable DOGE payment request — address, amount, message. Free forever — no signup, no watermark, generated entirely in your browser.

Which addresses are valid?: Dogecoin addresses start with D, A, or 9. UseQR validates the shape and tells you exactly what to fix if it doesn't match.
Is there a fee or a signup?: Neither. UseQR is free forever with no account, no watermark, and no limits.
Can I print it?: Yes — export SVG or PDF at any size. Use the size calculator to pick a printed width for the distance people will scan from.