> **Description:** Detailed explanations and visual flow diagrams illustrating the core functionalities of the QR API, including QR code generation, scanning processes, and various use case scenarios.

# How the QR API works

View the QR API how-it-works guides for illustrations of the main flows.

* [How it works with one-time payment](https://developer.vippsmobilepay.com/docs/APIs/qr-api/how-it-works/qr-one-time-payment-api-howitworks.md)
* [How it works with merchant redirect](https://developer.vippsmobilepay.com/docs/APIs/qr-api/how-it-works/qr-merchant-redirect-api-howitworks.md)
* [How it works with merchant callback](https://developer.vippsmobilepay.com/docs/APIs/qr-api/how-it-works/qr-merchant-callback-api-howitworks.md)
* [How it works with personal QR](https://developer.vippsmobilepay.com/docs/APIs/qr-api/how-it-works/qr-personal-qr-howitworks.md)

> **Full site overview:** For every page in this documentation, read [https://developer.vippsmobilepay.com/llms.txt](https://developer.vippsmobilepay.com/llms.txt).