Opera redirects the user to Google’s OAuth 2.0 authorization server. The URL contains parameters specific to Opera, including the client_id , redirect_uri , and scope .
Google displays a screen asking, "Opera would like to: View your email address, view your basic profile info." Note that Opera does not ask for Google Drive access or Gmail reading permissions—only OpenID Connect (OIDC) scopes (openid, email, profile).
Once the user approves, Google sends a temporary, single-use authorization code back to Opera’s servers, not directly to the browser. opera login with google
This write-up explores the multifaceted role of Google Sign-In within the Opera browser, breaking down its functionality from a user experience (UX) perspective, a technical security standpoint, and a data synchronization strategy. At first glance, the concept might seem redundant. If you open Google Chrome, you are automatically logged into Google. However, Opera is a third-party browser. By allowing users to "Login with Google," Opera is engaging in a strategic partnership of convenience.
In the modern digital ecosystem, the browser is no longer just a window to the internet; it is the operating system of our online lives. For a browser like Opera—a feature-rich, Chromium-based veteran competing against giants like Chrome, Edge, and Firefox—user retention and seamless onboarding are paramount. One of the most strategic tools in achieving this is the "Login with Google" feature. Opera redirects the user to Google’s OAuth 2
Ultimately, Opera implemented this feature not because they love Google, but because they understand human nature: People will not use a sync feature if the login is harder than the sync is worth. By lowering that barrier with Google Login, Opera ensures that more users stay locked into their browser ecosystem—even if Google gets a small nod along the way.
For the average user who already lives inside Google’s ecosystem, it is a safe, fast, and efficient way to sync their Opera browser across devices. For the privacy-conscious, it is a vector to be avoided in favor of a standalone Opera account. Once the user approves, Google sends a temporary,
Opera’s backend server exchanges this code for an ID token and an access token. The ID token (a JWT) contains the user’s verified email address and name.