Glossary · Scraping & automation
CAPTCHA
A challenge designed to tell humans from bots, triggered far more often by suspicious network reputation than by any single request.
A CAPTCHA is a test a site interposes when it suspects automation, the image grids, the checkbox, the invisible scoring that decides whether to let you through. Its job is to be easy for a person and hard for a script, and modern versions lean less on the puzzle itself than on everything around it.
That surrounding signal is where proxies matter. A CAPTCHA rarely fires because of one request in isolation; it fires because the address, its network reputation and the behaviour attached to it look untrustworthy. A datacenter IP with a poor history draws challenges a clean residential address never sees.
So the reliable way to meet fewer CAPTCHAs is not to solve them faster but to look less suspicious in the first place: a trusted address, human-paced behaviour, a consistent fingerprint. The challenge is a symptom of reputation, and reputation is the thing you actually control.
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