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Put tabs to sleep

A sleeping tab gives back the memory its page used. It stays in the panel, dimmed, and loads its page again when you select it.

Your Work Workspace has a group of 20 Codeberg tabs you won’t read again until Monday.

  1. In the panel, right-click the tab or the group, then choose Put to Sleep.

On a group, every tab inside it goes to sleep. The tab you’re viewing hands over to another tab first.

  • A sleeping tab’s row is dimmed, with a gray icon.
  • A page that asks before you leave it, for example one with text you haven’t sent, asks before it goes to sleep too.
  • Put to Sleep skips tabs you’ve set to Keep Awake. It’s dimmed when there is nothing to put to sleep.
  • A sleeping tab keeps its place and its history. Its page reloads when you select it.
  • Sval also puts tabs to sleep on its own in Workspaces you’ve left. See When Sval puts tabs to sleep.

© 2026 Ellm Tree, Inc. Sval is not officially associated with Mozilla or its products. Firefox is a trademark of the Mozilla Foundation in the US and other countries.