QR guide
Making QR codes that scan every time
Which QR type should I use?
Pick the type that matches what you want people to do:
- Website: open a landing page, menu or catalogue
- UPI payment: open any UPI app with your UPI ID and amount filled in
- WhatsApp: start a chat with a prefilled message
- Contact card (vCard): save your name, phone and email in one scan
- Wi-Fi: join a network without typing the password
Static vs dynamic QR codes
This tool creates static QR codes: the data is stored inside the code itself, so they work forever and need no account. Dynamic codes point to a redirect you can edit later, but stop working if the service shuts down or the subscription ends.
Design and print tips
A few rules keep codes scannable:
- Use a dark code on a light background with strong contrast
- Keep the logo small; the tool switches to high error correction when you add one
- Print at least 2 × 2 cm, larger for posters scanned from a distance
- Always test-scan with two different phones before printing
Need QR codes in your own software?
Peanut Square builds Odoo and custom software, including QR-based invoices, UPI collection, asset tags and inventory labels.
