Codes are made with your browser’s secure random generator and kept on this device. Nothing is uploaded.
Vouchers you can keep track of
Every voucher in a batch gets its own code. Random codes use letters and digits that are easy to read aloud, leave out look-alikes such as 0 and O, and end with a check character, so a mistyped code is easy to spot. The CSV lists every code with its value and expiry date; open it in a spreadsheet and mark each one as used.
Questions
What does the QR code do?
By default it holds the code itself, so any phone camera or scanner shows it for you to check. Choose a web page instead to open your shop with the code filled in, for example yourshop.com/redeem?code={code}.
Will the codes change if I edit the design?
No. The codes stay the same while you change the wording or colours, and are kept on this device. They only change when you press New codes or change how many, the prefix or the style. Download the CSV together with the PDF so they match.
How do I print and cut them?
Print the PDF at 100% on thick paper or card. Crop marks show where to cut. DL vouchers fit an envelope, A6 is postcard size, and card size fits a wallet.
Are sequential numbers safe?
Numbered codes are easy to sort but also easy to guess, so use them for things like raffle tickets or loyalty cards. For anything with money value, keep the random codes.