The vertical tabs and sidebar updates were just rolled out for testing.
Mozilla says Firefox users have long requested better tab management and organization.
The update, offered in Firefox Nightly 131, promises to deliver that experience.
Firefox Nightly 131 improves the left-hand sidebar, featuring shortcuts for parameters, bookmarks, and now vertical tabs.
The companysaid it was working on vertical tabsfor Firefox back in May.
For people who keep a lot of tabs open, vertical tabs reduce the clutter on wider displays.
It keeps the tabs neatly stacked and out of the way, making it easier to switch between them.
you’re free to also open new tabs using the shortcut button right on the sidebar.
It looks a lot like thevertical tabs in Microsoft Edge.
These features are still in active development and have to be manually enabled in the tweaks.
The sidebar also has a button for launching AI chatbots inside it.
It supports Gemini,ChatGPT, Claude, Mistral, andHuggingChat.
Mozilla is still working on the tab grouping and profile management features that were announced alongside vertical tabs.
These updates give us a peek into how the Firefox UI might change in the coming months, though.
