A CAPTCHA (an acronym for Completely Automated Public Turing test To tell Computers and Humans Apart) is a security technology used to verify whether a user is a human or a bot (computer program).
Korea is an East Asian country with a population of around 52 million people.
According to our research, captcha services are used on 1.5% of websites from Korea.
⭐ Most Popular in 2026
The following chart shows the top captcha services in Korea in 2026, based on market share.
The most popular is reCAPTCHA, which dominates the market with an overwhelming 82.4% share. It is followed by hCaptcha with 13.4% and Cloudflare Turnstile with 9.3%.
Here is a list of the top services that are more popular in Korea than worldwide.
Differences between global and country rankings are shown in parentheses.