OAuth & OIDC Token Decoders
Oauth Scope Analyzer
Analyze OAuth scopes and permissions from tokens or scope strings. Understand what access levels each scope grants. Private, browser-based tool.
Oauth Token Decoder
Decode and inspect OAuth 2.0 tokens. Analyze JWT access tokens, check expiration, view claims and scopes. Browser-based, private, no server.
Oidc Token Decoder
Decode OpenID Connect ID tokens to view claims, verify expiration, check issuer and audience. Supports Auth0, Okta, Azure AD. Browser-based, private tool.
OAuth and OIDC Tokens
OAuth 2.0 and OpenID Connect use tokens to authorize API access and authenticate users. Understanding token contents helps debug authentication issues and verify security configurations.
Access Tokens
OAuth access tokens authorize API requests. They may be opaque strings (requiring introspection) or self-contained JWTs. Our decoder handles both formats, parsing JWT tokens directly and displaying structure for opaque tokens.
ID Tokens
OpenID Connect ID tokens are JWTs containing user identity claims. They prove authentication occurred and provide user information like email and name.
Scope Analysis
OAuth scopes define what permissions a token grants. Our analyzer displays requested and granted scopes, helping verify that applications request only necessary permissions.