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Tabs or windows on a Mac: when to use which

Fifty tabs in one window, or ten windows of five? When tabs help, when separate windows are better, and how to get tabs for any app's windows.

Guide · Updated 13 October 2026

Tabs hide things too. A window with forty tabs is as cluttered as forty windows, just smaller.

Tabs are good for

  • Things of the same kind you flip between: search results, a set of documents.
  • Things you look at one at a time.

Windows are good for

  • Things you need to see at the same time.
  • Separate tasks: one browser window per project instead of one window for everything.

Mac tabs you may not know

Many Mac apps can merge windows into tabs: Window menu, Merge All Windows. Desktop & Dock settings has Prefer tabs when opening documents.

Tabs for any windows

ClutterFreeMac can turn a column into a tabbed column with ⌃ ⌥ ⇧ T. The windows in it share the space and show as tabs at the top, even if they come from different apps. Good for chat apps, or two reference documents you flip between.

Questions

Should I use tabs or separate windows?

Tabs for things you look at one at a time, windows for things you need to see together.