What is an SMS QR code?

An SMS QR code encodes an sms: URI that opens the device's messaging app with a pre-filled recipient number and optional message body. The user just taps Send — no typing the number or message.

Can I pre-fill the message body?

Yes. Add ?body=Your%20message to the SMS URI. URL-encode the message body — spaces become %20, special characters need encoding. Most messaging apps will pre-fill the text field with your message.

Does an SMS QR code work for WhatsApp or iMessage?

The sms: scheme opens the default SMS app. For WhatsApp specifically, use https://wa.me/+15551234567?text=Your+message as the QR code data. For iMessage on Apple devices, the sms: link will open iMessage if available.

Can I track who texts in from my SMS QR code?

You can track response volume through your SMS platform. For scan tracking (before the user sends a text), use a dynamic QR code with Analytics enabled — you see scan data without requiring the user to actually send a message.

Is an SMS QR code TCPA compliant?

The QR code itself is just a shortcut to open the messaging app — the user still initiates the message. This is generally considered a compliant opt-in mechanism, but consult with a legal advisor for your specific SMS marketing setup.

SMS QR Code Generator

Free SMS QR Code Generator

Create a QR code that opens a text message pre-addressed to your number — with optional pre-filled message text. Ideal for SMS opt-in campaigns, support lines, and any context where you want users to text you easily.

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Example SMS QR Code

API URL

https://api.online-qr.com/v1/make-qr?data=sms:+15551234567?body=Hi%2C%20I%20want%2...

What is a SMS QR Code?

An SMS QR code encodes an sms: URI that, when scanned, opens the device's default messaging app with a phone number pre-filled and optionally a message body pre-populated. This is widely used for SMS marketing opt-ins, customer support shortcuts, and contest entry prompts. Unlike email, SMS responses are immediate and mobile-native, making SMS QR codes effective for high-response campaigns.

How to Create a SMS QR Code

1
Format your SMS URI: sms:+15551234567?body=Hi%2C%20I%20want%20more%20info (URL-encode the message body)
2
Pass it as the data parameter: https://api.online-qr.com/v1/make-qr?data=sms%3A%2B15551234567%3Fbody%3DHello
3
Embed the QR code on posters, packaging, or social media — scanning opens the messaging app instantly

Example API call

https://api.online-qr.com/v1/make-qr?data=sms%3A%2B15551234567%3Fbody%3DHi%252C%2520I%2520want%2520more%2520info

Common Use Cases

SMS marketing opt-in prompts on retail packaging and flyers
Text-to-win contest entries at events or on packaging
Customer support shortcut for quick issue reporting
Appointment booking via text message for service businesses
Feedback collection after in-person service encounters
Emergency or after-hours contact shortcuts on business signage

Tips for Best Results

Keep pre-filled message text short — some devices truncate long pre-filled SMS bodies
Include a keyword in the pre-filled body if using an SMS platform that routes by keyword
Test on both iOS and Android as the sms: URI behavior can vary slightly between platforms
Pair with a dynamic QR code so you can update the phone number or message without reprinting

Frequently Asked Questions

Related QR Code Types

Phone QR Code Generator

Generate a QR code that initiates a phone call when scanned. Let customers call you with a single scan — no memorizing or typing required. Perfect for business signs, print ads, and contact materials.

Email QR Code Generator

Create a QR code that opens a pre-addressed email draft when scanned. Perfect for feedback forms, customer support, and contact buttons — users just tap "Send" without typing your email address.

URL QR Code Generator

Create a QR code for any website URL in seconds. With Online-QR, just paste the URL into our API endpoint — no signup, no SDK, no software to install. Embed it anywhere as a simple image tag.

View all 11 QR code types

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Generate your first QR code in seconds with the Online-QR API. No signup required for static codes. Create a free account for dynamic codes with scan analytics.

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