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SMS QR Code Generator

Create SMS QR codes with prefilled number and message. Download high-resolution PNG or SVG online.

By Tools Hub Editorial Team·Published January 24, 2026·Time to read: 8 min

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SMS QR Generator

Create an SMS QR code with pre-filled phone number and message.

Productivity

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What SMS QR Does

An SMS QR code opens the phone's messaging app with a pre-filled recipient number and (optionally) a pre-filled message body. The user just taps Send. This removes the friction of typing a number and a keyword manually.

The encoded format: smsto:+12125551234:JOIN

Use Cases

Opt-in campaigns: "Text JOIN to 55555" is a classic marketing pattern. Replace manual typing with a QR code on posters, flyers, and product displays. Scan, see the pre-filled message, tap Send.

Feedback collection: Print a QR on restaurant receipts, hotel room cards, or service invoices. The pre-filled message says "Feedback for order #[number]: " and the customer just types their comment.

Appointment confirmation: Medical offices, salons, and service businesses send appointment reminders. Include a QR in the printed reminder: scan to reply "CONFIRM" to the appointment line.

Event RSVP: Print a QR on invitations. Scan to send "YES" to the event coordinator's number.

Message Body Tips

•Keep pre-filled text under 50 characters. Longer messages make denser QR codes.

•Use a clear keyword: JOIN, CONFIRM, YES, FEEDBACK.

•Leave space after the keyword for the user to add their own text if needed.

•Avoid special characters (&, =, #) in the body -- they can break URL encoding on some devices.

Compliance: Opt-Out Instructions

If you use SMS QR for marketing opt-in:

•The printed material next to the QR must state what the user is subscribing to.

•Include opt-out instructions: "Reply STOP to unsubscribe at any time."

•Follow local regulations (TCPA in the US, GDPR-related consent in the EU, Federal Law No. 38-FZ in Russia).

•Never pre-subscribe people. The QR should only open the message -- the user must actively tap Send.

Character Limits and QR Density

Every character in the message body adds to QR complexity. A QR with just a phone number is about 25 characters. Adding a 50-character message roughly doubles the data. Keep the total payload under 100 characters for a QR that scans reliably at 3 cm on a business card.