📖 Complete Guide: How to Share WiFi with a QR Code
WiFi QR codes are one of the simplest and most practical uses of QR technology. Instead of asking guests to type a long, complex password, they simply point their phone camera at the QR code and tap the notification — they're connected instantly. This works on both iPhone (iOS 11+) and Android (10+) using the built‑in camera app.
Why Typing WiFi Passwords Is Broken
WiFi passwords are often long, case‑sensitive, and contain special characters. When a guest asks for your WiFi password, you either have to read it aloud (and risk them mishearing) or send it via text (which is slow). QR codes eliminate all of this — they encode the network name, security type, and password into a single scannable image.
Understanding the WiFi QR Format
The standard WiFi QR format is a text string that starts with WIFI: and includes the security type (T:), SSID (S:), password (P:), and optional hidden flag (H:). For example: WIFI:T:WPA;S:MyNetwork;P:Secret123;;. This generator creates that exact string for you, escaping special characters correctly.
Best Practices for WiFi QR Codes
- Match your SSID exactly: The network name is case‑sensitive. Use the same capitalisation as shown in your router's WiFi settings.
- Choose WPA/WPA2 for modern routers: This is the most common security type. WEP is outdated and insecure — only use it for very old hardware.
- Use high‑contrast colours: A dark QR on a light background scans best. Avoid light‑on‑light or dark‑on‑dark combinations.
- Test on both iPhone and Android: Before printing 500 copies, test the QR code with multiple devices to ensure it connects correctly.
- Print at a minimum size of 3×3 cm: Smaller codes may fail to scan in low light or from a distance.
- SVG for large‑format print: If you're printing a poster or banner, download the SVG version for crisp, infinite resolution.