Display tabs vertically in the sidebar. Tabs can be grouped.
Browser settings
To match icon colors to your theme, enable the experimental feature as follows: * Visit about:config. * Search for svg.context-properties.content.enabled and set the value to true.
Tab groups
Group tabs: * Select tabs by Shift + click or Ctrl + click. * Drag one of the selected tabs and Shift + drop it on the tab you want to group. * Or from the context menu (right click on one of the selected tabs), select "Tab Group" -> "Group Selected Tabs".
Add group label: * From the context menu, select "Tab Group" -> "Show Group Label" and edit.
Collapse / expand tab group: * Click on the colored part will toggle collapsed / expanded state. * Or from the context menu, select "Tab Group" -> "Collapse (Expand) Tab Group".
Cancel tab group: * From the context menu, select "Tab Group" -> "Ungroup tabs".
