The WhatsApp Click-to-Chat Link Format
WhatsApp provides an official click-to-chat URL format that opens a conversation with a specific phone number:
```
https://wa.me/
```
With a pre-written message:
```
https://wa.me/?text=
```
Phone Number Format
Always use the international format
without the leading plus sign, spaces, or hyphens:
- UK number +44 7911 123456 → `447911123456`
- Pakistan +92 300 1234567 → `923001234567`
- US +1 212 555 0100 → `12125550100`
Creating the Pre-Written Message
URL-encode your message. Key encoding rules:
- Spaces become `%20`
- New lines become `%0A`
- Question marks become `%3F`
Example message: "Hello, I'd like to enquire about your services"
Encoded: `Hello%2C%20I%27d%20like%20to%20enquire%20about%20your%20services`
Full link: `https://wa.me/447911123456?text=Hello%2C%20I%27d%20like%20to%20enquire%20about%20your%20services`
Generating the QR
Paste the full `wa.me` URL into any QR generator (including this site). Generate as a static QR — the destination is fixed and static QR is permanent and free.
Use Cases
Customer support: QR on packaging or website links to a WhatsApp chat with a pre-written "I need help with my order" message.
Sales enquiry: QR on leaflets or business cards links to "Hello, I saw your leaflet and I'm interested in [your service]."
Appointment booking: QR on a waiting room poster links to "Hello, I'd like to book an appointment."
Restaurant orders: QR on a takeaway menu links to "Hi, I'd like to place an order."
Business vs Personal WhatsApp
For business use, register for WhatsApp Business (free). WhatsApp Business allows a business profile, automated welcome messages, away messages, and labels. The click-to-chat URL format is identical — just use your WhatsApp Business number.
Checking Before Printing
Test your link on both iPhone and Android. On iOS, the link opens WhatsApp if installed or prompts to install it. On Android, the same. If WhatsApp is not installed, the link opens the wa.me web interface — it still works, but in-browser rather than the app.
Putting this into practice
Start with the smallest real test you can run. Generate the code, print it at the exact size you plan to use, and scan it with two different phones in the lighting where it will live. Check that the destination page loads quickly on a mobile connection and that the call to action next to the code tells people what they will get. If anything feels slow or unclear, fix it before you print a full batch, because reprints cost more than a short test. Keep a note of the size, material, and placement that worked so the next batch starts from a proven setup.
Common mistakes to avoid
The most common mistakes are easy to avoid once you know them. Long payloads make modules tiny, low contrast makes edges hard to read, and text placed too close to the border eats the quiet zone the scanner needs. Covering a corner finder pattern with a logo or a sticker breaks detection entirely, and a code placed behind glare or on a curved surface fails even when the print is perfect. Review each of these points on a proof copy, and treat any failure as a reason to adjust the design rather than a reason to blame the scanner.
Quick checklist
- Keep the payload as short as practical so modules stay large.
- Keep dark modules on a light background with strong contrast.
- Leave a clear quiet zone on all four sides of the symbol.
- Test the printed code at the real viewing distance and lighting.
- Confirm the destination page loads fast on a phone.
- Recheck the code after any change to the link, design, or placement.
Related tools and guides
- For local payments, the [Pakistan payment QR](/pakistan-payment-qr) page explains the regional flow and what customers see.
- The [regional payment QR](/regional-payment-qr) guide covers payment codes used across different markets.
- The [WhatsApp QR code generator](/whatsapp-qr-code-generator) builds codes that open a chat with a prefilled message.
- The [bulk generator](/bulk-generator) builds many codes from a table when one-off generation would take too long.
- Test every code with the [QR scanner](/qr-scanner) on more than one phone before you publish or print it.
- The [UTM builder](/utm-builder) adds campaign parameters so scans show up separately in your analytics.
