What is CAPTCHA?

A challenge designed to distinguish humans from automated traffic.

A CAPTCHA is a challenge-response test used to tell humans and bots apart, such as image puzzles or invisible behavioral checks like reCAPTCHA. Sites present CAPTCHAs when traffic looks automated — often triggered by datacenter IPs or a single address making too many requests. Using high-trust residential IPs and rotating them appropriately is the most effective way to avoid triggering CAPTCHAs in the first place.