QR. is a dynamic QR code API. Create codes HTTP, export PNG/SVG/PDF, host edge short links. Change destinations anytime via PATCH — no reprint. Advanced edge rules (device, country, time, password, A/B) & instant signed webhooks on scans. Official clients: Node, Python, Go, PHP, Ruby, CLI. Free plan: full API access (20 dynamic QRs/month, unlimited scans). Try our free generator to create living QRs in seconds, then claim to API.