Free SMS QR Code Generator
Create a QR code that opens a pre-filled text message — number and message already set. No login required, no watermarks, completely free.
Scanning opens a pre-filled text message to this number in the device's messaging app.
SMS QR Code Generator
An SMS QR code is a scannable barcode that, when scanned, opens the phone's native text messaging app with a new message pre-addressed to a specific number — with an optional pre-filled message. UnlimitedQRCodes.com generates SMS QR codes free in your browser, with no account, no watermarks, and zero data transmitted to any server.
What Is an SMS QR Code?
An SMS QR code encodes a phone number and an optional message using the SMSTO: format — a scheme that camera apps on both iOS and Android recognize and open directly in the messaging app, with the recipient and text already filled in.
It works on any phone with standard cellular texting, making it the most universally compatible way to turn a scan into a direct, two-way conversation — no app install required on the scanning device.
Common Uses for SMS QR Codes
- SMS marketing opt-ins — pre-fill a keyword like "JOIN" so scanning and sending subscribes someone instantly
- Event check-in or RSVP — collect a quick text confirmation from attendees
- Contest & giveaway entries — have customers text a code word to enter
- Service requests — place on equipment or vehicles for a quick "text to report an issue" flow
- Two-way customer support — for businesses that prefer SMS over email or calls
- Lead capture at trade shows — booth visitors text a keyword to receive follow-up info
Tips for Best Results
- Use a clear, short keyword — for opt-ins, a single word ("JOIN") is easier to verify and process than a free-form message
- Always include the country code — e.g. +1 for the US — for correct international routing
- Test before printing — scan with both an iPhone and an Android device to confirm the message pre-fills correctly
- Mind SMS character limits — standard SMS messages cap at 160 characters; longer pre-filled text may be split by the carrier
SMS QR Code FAQ
What happens when someone scans an SMS QR code?
Their phone opens its messaging app with a new text message already addressed to the number you set, with the message pre-filled if you included one. They just review and tap send.
Do I need to write a pre-filled message?
No — only the phone number is required. A pre-filled message is optional but increases response quality, since you can standardize what people send (e.g. 'START' to opt in, or a product code to request info).
Will this work on both iPhone and Android?
Yes. This generator uses the SMSTO: format, which is the QR-specific scheme that both iOS and Android camera scanners recognize and open directly in the native messaging app.
What's the difference between an SMS QR code and a WhatsApp QR code?
An SMS QR code opens the phone's native text messaging app and sends a standard SMS, which works on any phone with cellular service, including those without WhatsApp installed. A WhatsApp QR code opens a WhatsApp chat specifically and requires the recipient to have WhatsApp. Use SMS for universal reach; use WhatsApp where it's the dominant messaging platform.
Can I use this for SMS opt-ins or marketing campaigns?
Yes. Pre-fill the message with a keyword like 'JOIN' or 'SUBSCRIBE' so scanning and sending completes an opt-in in one step — a common pattern for SMS marketing lists and two-factor contact setup.
Can I generate SMS QR codes in bulk?
Yes. Switch to the Bulk Upload tab and upload a CSV with a phone number and optional message per row. Generate up to 30 at once and download as a labeled PDF or ZIP.