Right-click anywhere on the top toolbar or tab strip and select Turn on Vertical Tabs to automatically activate the new sidebar. Advanced Configuration ( about:config )
If you want to toggle this feature manually (useful if it isn't enabled by default on your installation or if you prefer the old style):
The current Firefox sidebar, also known as the "sidebar" or " bookmarks sidebar," offers a vertical panel that can be toggled open or closed. It primarily displays bookmarks, although some add-ons can modify its behavior. While it provides quick access to bookmarks, its functionality and design have remained relatively unchanged over the years.
Right-click anywhere on the top toolbar or tab strip and select Turn on Vertical Tabs to automatically activate the new sidebar. Advanced Configuration ( about:config )
If you want to toggle this feature manually (useful if it isn't enabled by default on your installation or if you prefer the old style):
The current Firefox sidebar, also known as the "sidebar" or " bookmarks sidebar," offers a vertical panel that can be toggled open or closed. It primarily displays bookmarks, although some add-ons can modify its behavior. While it provides quick access to bookmarks, its functionality and design have remained relatively unchanged over the years.