https://etakorea.net/
K-ETA, or Korea Electronic Travel Authorization, is an online pre-travel screening system that allows travelers from eligible countries to apply for authorization to enter South Korea. Unlike a traditional visa, the K-ETA doesn’t require an embassy visit or an in-person interview. The process is quick, simple, and done entirely online. It’s required for travelers who are planning a short stay—usually up to 90 days—for purposes such as tourism, business, or attending conferences.