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Strollin' around
Status: New idea


I hope this is a good place for my idea. It would be great if Mozilla Team could add two-level tab stacks like in vivaldi. This is a great feature especially for Firefox users who have hundreds of tabs and would like to group them (work, music, projects). I've been using Firefox for years and I like how it's easy to have a lot of tabs and they don't shrink like in e.g. google chrome (terrible!).

I really miss this feature and I hope Mozilla Team will consider this idea and add it to the new version of Firefox.


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Team Mozilla Firefox,

Good-day & Greetings!

Though 'Mozilla Firefox' is indeed a very good & leading browser. Thanks & highly appreciate your work on this.
I want this to have few very important & competitive features & continue leading all the others in the market .

Hence, I suggest to look at 'Vivaldi Browser' ( & specially it's feature of '2 level Tab Stacking' ( which is most useful feature.

& also 'Arc Browser' (from The Browser Company, New York/ & specially it's feature of 'having folders for pinned tabs' (

We can also incorporate that as well to make 'Mozilla Firefox' more feature rich.

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I would like a second tab list directly below the first parallel to it as I have filled up the first and when I open a new tab there is only a tiny amount of room for it making it difficult to click especially when I open more than one and have to click the arrows to move them over, it also means the close tab x is not visible or clickable, I have to right click and select close tab, sometimes it closes the wrong tab.

Community Manager
Community Manager

This sounds similar to this request: Firefox Adding a two-level tab stacks like in Vivaldi 

If so, let me know and we can merge the two threads together to keep the conversation focused in one place.

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Multi row tabs (like paxmod)

Paxmod is an extension (Works with quantum) that lets you have multi row tabs. See the paxmod link for a demo, and see the attachments for a customized version made to look like native Firefox.


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Hi Jon, yes merge the two.

Strollin' around

@MintMain21wrote at 09-27-2022 12:38 PM:

This belongs in the "Tab Grouping" thread

Obligatory link:

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I already abandoned firefox in favour of vivaldi, due to the missing feature from firefox 

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This is actually the only thing that keeps me away from coming back to firefox 

Strollin' around

Firefox needs this 100%. Firefox also needs the tiled windows built in. I'm near ready to move to Vivaldi. Only thing it doesn't have for me is the beautiful PIP windows that Firefox offers.

New member

Tab Group/Stacking and Workspaces

Other browsers (Opera, Brave and Vivaldi) already have it. Nevermind about the overglorified SpyAdware a.k.a. Chrome.

Just make similar to how Vivaldi does it.

Tab Stacking for Mobile, and both features in the PC version.