Left click the eye icon on your Toolbar to hide and restore the tabs or RMB click on any tab to open a context menu where you can select which tab to hide:
Hide this tab only
Hide all tabs except this one
Hide all tabs
Can be integrated with other extensions (i.e. Gesturefy) - the message is HIDE_TABS.
You can choose to automatically unload hidden tabs. This is off by default. You can enable it in the extensionโs Preferences page.
This add-on is in active development, so feel free to submit any issues or feature requests and those will be addressed!
