Token Types Explained: ID Tokens, Access Tokens, Refresh Tokens, Opaque Tokens & JWTs

Dec 5, 2025 · 6 min read · Series: Web Authentication Demystified — From Concepts to Real-WorldARC 1 — FOUNDATIONS OF USER AUTHENTICATIONPrevious: What Is User Authentication?Next: Understanding OAuth2 & OpenID Connect (OIDC) Tokens sit at the core of modern authentication sys...