OAuth Authorization URL Builder
Compose OAuth 2.0 and OpenID Connect authorization URLs with scopes, state, nonce, and optional PKCE parameters in your browser.
Build OAuth 2.0 and OpenID Connect authorization URLs
The authorization endpoint is where a user signs in and consents to scopes. Your client redirects the browser
there with query parameters defined in RFC 6749 (OAuth 2.0) and, for identity flows,
OpenID Connect. This builder composes a ready-to-open URL with client_id,
redirect_uri, response_type, scope, state, optional
nonce, and PKCE (code_challenge / code_challenge_method)
when you enable it.
When to use this tool
- Debugging redirect mismatches or missing scopes during local development.
- Preparing a manual authorize link for Postman, curl, or integration tests.
- Verifying PKCE parameters before exchanging an authorization code at the token endpoint.
Related: OAuth PKCE Generator, JWT Claims Validator.
Frequently Asked Questions
Is my client secret required here?
No. The authorization request is a front-channel redirect and only uses public parameters. Secrets belong on the token endpoint, never in the authorize URL.
What is PKCE?
Proof Key for Code Exchange (RFC 7636) binds the authorization code to a one-time verifier. Public clients
(SPAs, mobile apps) should send code_challenge with method S256.
Does data leave my browser?
Yes, parameters are assembled locally; nothing is uploaded to OnlineMiniTools servers.
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