URL Parser & Builder
Decompose any URL into its components and rebuild it from the parts
Components Edit any field to rebuild the URL
Decoded Parameter Values
URLs in Authentication
Why URL structure matters in OAuth2 and OIDC
Redirect URIs
OAuth2 requires exact redirect URI matching. A mismatched scheme, host, path, or trailing slash causes authorization failures. Parse both the registered and actual URI to spot differences instantly.
Authorization Requests
The OAuth2 authorization endpoint URL carries all request parameters — client_id, scope, response_type, state, nonce, PKCE challenge — as query parameters. Parse them to audit what's being requested.
Debugging Callbacks
After an OAuth2 flow, the callback URL contains the authorization code, state, and sometimes error details as query parameters. Parse the full callback URL to extract and verify each value.
Need a production-ready OAuth2 authorization server?
AuthAction handles redirect URI validation, authorization codes, token issuance, and PKCE — all correctly implemented so you don't have to.