Captcha, short for “Completely Automated Public Turing test to tell Computers and Humans Apart,” is an essential feature present on numerous websites today. Its main purpose is to distinguish between human users and automated bots attempting to access online platforms. Captcha verifies human users by presenting them with tasks that machines find difficult to solve, such as identifying distorted letters or selecting specific images within a given set. By requiring this additional step, Captcha effectively blocks automated scripts and malicious activity, bolstering online security. Its widespread implementation ensures a safer user experience during interactions with online platforms.