Blog

Tutorials, deep-dives, and practical guides for the most feature-rich free QR code generator.

Latest posts

• How to Make a WiFi QR CodeA practical step-by-step tutorial for printing a WiFi QR that guests can scan to join your network.
• TOTP 2FA QR Codes ExplainedA deep dive into the otpauth:// URI format, base32 secret encoding, and RFC 6238 TOTP math.
• Swiss QR-bill TutorialEverything about the 31-line SPC format required by Swiss banks, from IBAN to creditor reference to the mandatory Swiss cross overlay.

New posts land here as the QR ecosystem evolves.

Recommended reading

Worth your time if you want to understand why we built Abundera QR the way we did:

• The QR Code Industry Shakedown ↗RoamingPigs investigates how the dominant "free" QR code generators trick users into permanent subscriptions by routing scans through their servers and breaking codes when the subscription lapses. The exact pattern Abundera QR exists to refuse.