Developer ToolsFree
QR Code Generator
Frequently Asked Questions
What types of content can I encode in a QR code?▼
URLs (http/https), plain text, email addresses (mailto:), phone numbers (tel:), SMS messages (smsto:), and Wi-Fi credentials (WIFI:S:SSID;T:WPA;P:password;;).
What size is the downloaded QR code?▼
Default is 256×256 pixels. Adjust from 128×128px (small) up to 512×512px (large) for high-quality printing. All sizes download as crisp PNG files.
Can I customize the colors?▼
Yes. Change the foreground (dark) and background (light) colors. Ensure sufficient contrast between colors for reliable scanning.
Is the QR code generated in the browser?▼
Yes. QR codes are generated locally using the qrcode.js library. Nothing is uploaded to any server.
Do generated QR codes expire?▼
No. QR codes generated here do not expire. The code is a static pattern encoding your input — it works as long as the content it links to remains active.