QR Code API Quick Start
Generate QR codes programmatically with the QrCodeGenius REST API — create your API key and make your first request in minutes.
API Authentication
How QrCodeGenius API keys work and how to authenticate your requests securely.
Bulk QR Generation (POST /qr/bulk)
Generate up to 100 QR codes in one API call, save them to a folder, and make them dynamic and trackable — reference and examples.
Embed a QR Image (GET /render)
The fastest way to show a QR code — a cacheable PNG endpoint you can drop straight into an img tag, with size and color parameters.
API Errors and Rate Limits
How QrCodeGenius API quotas, credits, and error responses work — status codes, monthly limits, and how to handle 429s.
Generate a QR Code (POST /qr)
Full reference for the QrCodeGenius single-generation endpoint — request fields, styling options, and response format with examples.
QR Styling Options Reference
Every design field accepted by the QrCodeGenius API — dot shapes, corner styles, gradients, logos, and error correction levels.