QR Guides

Clear answers to the questions people ask when they print a QR code — written for 2026 phone cameras.

How to create a QR code without uploading anything
Why many “online” QR generators send your Wi-Fi password or vCard to a server, how to tell the difference, and how to make a code that stays on your device.
How to make a Wi-Fi QR code guests can scan
The WIFI: string phones understand, WPA vs open networks, hidden SSIDs, and where to print the code so it actually gets used.
vCard QR codes for digital business cards
What to put on a contact QR, vCard 3.0 vs MeCard, and how well iPhone and Android save the fields after a camera scan.
QR error correction and how large to print
What L, M, Q and H actually recover, when a centre logo is safe, and minimum sizes for cards, posters and screens.
URL, text, email, SMS and WhatsApp QR codes
Which payload to pick for a poster, a pack insert or a support line — and why a static QR cannot change its destination later.