QR Code Toolkit
33-endpoint QR code generation API. Create QR codes for URLs, text, WiFi credentials, vCard contacts, email, phone, SMS, geo coordinates, and calendar events. Output as SVG, PNG, or Base64. Customize foreground/background colors, module size, border width, and error correction level (L/M/Q/H). Batch generation. QR code data capacity calculator. Version and mode optimizer.