QR.

QR. is a dynamic QR code API for developers that enables minting, printing, routing, and observing QR codes. Change destinations anytime without reprinting, with edge network redirects and full API access. The platform offers a free tier with 20 dynamic QRs/month, unlimited scans, and comprehensive tools for building scalable QR solutions. Key benefits include: - Dynamic destination management: Change QR code targets via PATCH requests without reprinting physical codes, ideal for evolving campaigns or product listings. - Edge network routing: Resolve scans by device, country, time, or weighted A/B testing, with first-match priority and fallback to default URLs. - Comprehensive API & SDKs: One API spine for minting, printing, routing, observing, and branding, with official SDKs for Node, Python, Go, PHP, Ruby, CLI, and REST for all languages. - Print & export flexibility: Generate PNG, SVG, or print-ready PDF exports with custom domains and logos for brand consistency. - Lifecycle & analytics: Manage QR code lifecycles (expire, max scans), track scans via webhooks, and use UTM parameters/metadata for campaign tracking. Perfect for developers building products, automating workflows, or implementing marketing solutions who need flexible, scalable QR code management without physical reprints.