Run a Google OAuth preflight check

Enter your public app details to run a limited, server-side check of your homepage HTML and submitted scopes.

Public application details

This scan fetches only the public homepage HTML. It does not execute JavaScript, access Google accounts, or read OAuth credentials.

Never submit OAuth credentials

Do not enter client secrets, access tokens, refresh tokens, or private keys.

Independent preflight guidance

OAuth Preflight cannot accelerate Google's internal review queue or guarantee approval.