Tab (interface)

In interface design, a tab is a graphical user interface object that allows multiple documents or panels to be contained within a single window, using tabs as a navigational widget for switching between sets of documents.^[1] It is an interface style most commonly associated with web browsers, web applications, text editors, and preference panels, with window managers and tiling window managers.

Tabs are modeled after traditional card tabs inserted in paper files or card indexes (in keeping with the desktop metaphor). They are usually graphically displayed on webpages or apps as they look on paper.

Tabs may appear in a horizontal bar or as a vertical list. Horizontal tabs may have multiple rows. In some cases, tabs may be reordered or organized into multiple rows through drag and drop interactions. Implementations may support opening an existing tab in a separate window or range-selecting multiple tabs for moving, closing, or separating them.^[2]