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Glossary of proxy and scraping terms

Industry jargon explained in plain English: residential, ASN, fingerprint, KYC, sticky session, CGN, JA3, anti-detect and ~50 more. Useful for newcomers and for anyone talking to a provider's support team.

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H

Headless browser

technical
A browser without a UI — Puppeteer (Chromium), Playwright. Used for scraping automation. Many sites detect headless mode through dedicated JS checks.
See also: puppeteer playwright

S

Scraping

use-case
Automated collection of data from websites. Public scraping (no authentication) is legal in most jurisdictions. A ToS violation doesn't make it criminal.
See also: gdpr puppeteer

T

TOS

Terms of Service legal
User agreement with a site. A ToS violation is not a crime — it's a contractual breach. The site can ban your account, but scraping public data is legal in the US (hiQ vs LinkedIn).
See also: scraping gdpr