An engine inside a different application

WebKit renders pages in Mac Profiles. The address bar, profile library, bookmarks, history and team controls belong to Mac Profiles. Safari is Apple's complete browser application. Sharing an engine does not give another application Safari's extension support, iCloud integration or identical settings. Test a required feature in the actual application rather than inferring it from the engine name.

What a profile separates

Each Mac Profiles profile uses a separate persistent WebKit website data store. This keeps its cookies and website storage apart from other profiles. Names, projects and local browsing history help people return to the right workspace. This separation is useful for distinct authorized accounts and repeatable website tests, even when every window runs on the same physical Mac.

Your Mac remains the underlying device

A new data store does not replace the computer's processor, graphics hardware or every value a website can measure. Mac Profiles does not claim complete hardware fingerprint replacement. A MacBook Air or iMac label cannot turn the host into that computer, and a mobile user-agent string cannot reproduce an iPhone's operating system and browser behavior.

Choose the workflow you actually need

Apple also offers profiles in Safari for separating browsing activities. Mac Profiles adds its own local organization, explicit cookie tools and a team lease workflow. Start with one noncritical account, open a second profile and check that the expected state stays separate. Then close and reopen the first profile to test the site's own session behavior. Compare those results with your requirements before moving a larger collection of accounts.