CookiesOnce the user approves, Google sends a temporary, single-use authorization code back to Opera’s servers, not directly to the browser.
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. opera login with google
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. Once the user approves, Google sends a temporary,
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’s backend server exchanges this code for an
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.