Browserfensters

Browserfensters are the top-level graphical windows used by web browsers to display content and provide user controls. In modern browsers, a window typically contains a tab bar, an address or search bar, navigation buttons, menus, and toolbars, as well as a content area where web pages are rendered using a browser engine (such as Blink, WebKit, or Gecko).

Each window belongs to a user profile and can host one or more tabs. Users can switch between tabs within a window or detach a tab into a new window. Windows can be resized, minimized, maximized, or moved between monitors. Some browsers also offer specialized window modes, such as private or incognito windows, which do not persist history and cookies after closing.

Under the hood, each window runs the rendering and JavaScript engines to display pages, manage security contexts, and apply policies like same-origin and sandboxing. Most modern browsers use a multi-process or multi-thread architecture, isolating tabs or windows to improve stability and security.

Windows are managed by the operating system's window manager. They provide features such as snapping, desktop switching, and accessibility controls. The behavior of browserfensters can be affected by browser settings, extensions, and profiles.

Privacy and session management: Windows may remember session state (open windows and tabs) across restarts, depending on settings. Developers can open new browserfensters via scripts (pop-up windows) which are subject to popup blocking policies.