Which type fits where
| Type | Where to use it | Watch out for |
|---|---|---|
| Link | Flyers, packaging, shop windows, business cards | Use a short, permanent URL |
| Wi‑Fi | Cafés, accommodation, meeting rooms | Print a new code when the password changes |
| Contact card (vCard) | Business cards, trade fair stands | Only the details you want to share |
| QR payment | Invoices, deposits, tickets, donations | The account number is checksum-verified |
| Google review | Tables, receipts, goodbye emails | Find the right Place ID for the location |
QR payments without mistakes
The most common mistake in QR payments is a typo in the account number. So the generator checks the number with the same mod-11 checksum banks use and converts it to an IBAN. It removes diacritics from the message, because not every bank displays them correctly in a QR payment. The variable symbol can have at most ten digits.
Need a QR payment on an invoice? Use the invoice generator, which adds it automatically.
Reviews in one scan
The easiest way to get more Google reviews is to shorten the path to them. A “Google review” QR code opens the review window directly. More detail in the Google review link tool.
Open source
We publish the generator’s core (QR payment, account-to-IBAN conversion, Wi-Fi and vCard) as open source under the MIT licence, so anyone can use it in their own project.