QR Code Data Types Explained: URL, Wi‑Fi, vCard, SMS, Email & Calendar
Overview of common QR code payload types—website URL, Wi‑Fi network, vCard contact, SMS, email, and calendar events—and when to use each for marketing and operations.
Not every QR code opens a website. The same QR standard can carry Wi‑Fi credentials, contact cards, prefilled SMS or email, geographic coordinates, and calendar data. Choosing the correct format reduces friction for users and matches your campaign goal.
How QR payloads work
A QR code stores a string. The operating system decides what to do based on a prefix or structure: http/https for web, WIFI: for networks, BEGIN:VCARD for contacts, and so on. Your QR code generator encodes the correct string so scanners open the right app.
Dynamic QR codes often wrap a short URL that redirects to your target—useful for changing destinations or tracking scans—while static QR codes embed the final data directly.
Website and landing page (HTTP/HTTPS)
The most common use is a URL pointing to a landing page, menu, app store, or form. Use HTTPS where possible. Keep URLs as short as cleanliness allows so the QR symbol can be smaller or more robust at a fixed size.
Wi‑Fi QR codes for guest access
Wi‑Fi QR codes encode SSID, security type, and password so guests can join without typing credentials. They are widely used in retail, cafés, events, and offices. Ensure the password in the encoded string matches the live network configuration.
vCard (contact information)
vCard payloads let users save a name, phone, email, organization, and URL to their address book in one scan. Keep fields focused; very large vCards increase data length and may require a larger QR or higher error correction.
SMS, email, and phone (tel / mailto / sms)
tel: links initiate a call; mailto: can include subject and body for support or lead forms; sms: can include a prefilled message for opt-in campaigns. These formats are effective on signage and packaging when the call-to-action is a single tap.
Location and calendar events
Geographic coordinates can open maps applications. Calendar entries (ICS-style data) support event marketing and conferences. Validate on target devices because handler behavior can vary slightly by OS version.