See also: #751 - Support for tabs.
There's a lot to do for 2.0 already. I think this is going to be one of the larger UX efforts (to get right at that) and I might suggest pushing this to after.
We agreed to move this to the next major update (3.x)
Please stick with tabs for the multitasking aspect. Please do not invent a new UX concept just for this. Tabs are awesome. Thank you!
Thanks @andreicristianpetcu
Could you share some more helpful insight into what you most often use tabs for (on mobile) exactly?
While not exactly a use case for tabs, I have been viewing certain websites that require popup/pop-up.
Without tabs, websites just redirect to the ads (instead of opening up another tab/window) and it is sometimes impossible to advance to the next page of the intended website when you Go Back.
@antlam I am a heavy reddit user and most of my browsing is on Reddit or starts from there. I usually start several tabs in parallel from various bookmarks. I have named bookmarks for refi (Reddit Firefox), remo Reddit Mozilla or rena (Reddit News All). Since Reddit loads slow, I open several tabs and wait for them to load.
I either open them by typing the name of the bookmark in the URL or I just click on the Activity Stream pinned items if it is on the list. If I find something interesting I open a new tab with that Reddit post.
Forgot to mention: I use Firefox Nightly for this workflow and I would like to replicate it on Firefox Focus.
Does this help? Do you want a video? :D
@antlam friendly reminder to add the mocks here :)
EDIT: deprecated designs
As @pocmo is continuing to figure out the plumbing here, here's an update of the latest. Finalized flow and specs to follow.
Top row: non-collapsed FAB
Second row: collapsed FAB
Both options will allow for a "Open in new tab" option in the long-press dialog
I think it is better to use the title of the page instead of the hostname as a tab identifier. You might have several tabs for the same web site. This is how Fennec does it now. Consistency would be nice :)
Thanks @andreicristianpetcu ! When I was designing the tabs tray on Fennec, it made sense for us to use page titles. But we'll have to figure what works best in this case. We'll be sure to iterate and improve on this as we go.
Attaching V1 designs

Additional notes for context
Things to consider
@antlam thanks, still missing in this issue is
(basically, all we've talked about in our slack chat, would be great to have this listed/outlined in the specs doc as well)
My recommended instructional copy is "Open temporary tab" - think "open" is better than "add".
@bbinto good point! And @pocmo also raised those issues too. We'll continue to update this.
Number of Temporary tabs, I'd suggest starting with a max of 5:
what happens if user reached max tabs:
Side note:
Below is a just-finished specs for multitasking that @antlam and I have been working on today. It should help address issues that @bbinto wrote, as well as other issues, too:
- how many tabs one user can open
- what happens if user reached max tabs and tries to open another one coming from another app
Although it doesn鈥檛 reflect our final visual design (which will be posted later on), it should be the source of truth for interaction design and flow.

Thanks! That's a great spec. :)
@mheubusch @antlam @brampitoyo I added a list of strings I think we need to the first comment. Please have a look and let me know if something is missing or whether we need to change some.
Thanks for listing the strings, @pocmo - here are my recommendations:
Accessibility string for the new floating action button (FAB): Expand
Label for the FAB: Erase browsing history
Accessibility string for the "+" button: Open tab
Accessibility string for the "X" button when typing new tab's address: Close tab
Context menu entry: Open link in new tab
Dialog title: Open link in selected tab
Dialog action: OPEN
Dialog action: CANCEL
(@antlam : I've been playing with messaging to explain the 5-tab limit, but am thinking we should go with what i have and if we can test or get feedback about needing this to be clearer I can revisit. Also, I removed reference to "temporary" in the tabs - while they are not always visible, they are persisting in the background and i don't want to mislead. if we find that people expect tabs to have tabbed browsing, we can consider something like floating tabs or tab-less tabs, but for now wanted to keep things simple. )
Please don't do this.
I will probably be alone in urging you to stick with the single tab model. But I seriously believe it's FFF's best feature.
I downloaded this browser to avoid adverts and tracking. But I kept using it because it changed the way I browsed. I used to have real trouble controlling my browsing habits: I would never stick to my original task, but open up scores of tabs as my curiosity would get the better of me. Oh, what about this topic? Hmm, that makes me want to search for that. Oh, I shall have to read that link later. And before I knew it I'd spent an hour on the internet, laid on the sofa, having _done_ absolutely nothing.
Focus changed that: it keeps me _focused_ on a single task. When the task ends, I might start another one, a new search or an article, but only if I remember and only if I still care enough to bother looking it up. This means new search tasks have to pass a higher interest threshold. I only continue if the content is _really_ compelling.
The effect is transformative. It puts me back in control. It makes me feel like I'm the one controlling the browsing, not some website's psychological trickery or an algorithm's UX dark patterns.
Focus works well because it is the simplest and least distracting browser for Android that isn't technologically crippled. The search-read-restart-repeat flow puts me in the habit of destroying my browser data as soon as possible. And the fact I finish pages with nowhere to go puts me back in control of my free time. Please keep the focus in Firefox Focus.
Or can add in settings
multiple tabs options who is activated by default
With the label that it can break some webpages if is desactivated
@brampitoyo your spec doc is amazing, so helpful, and thanks for addressing pretty much all of my concerns/questions.
@antlam's comment:
we should also measure this to see what the distribution looks like for users per session. I.e. how many Temporary tabs do most users open when performing a task in Focus?
I assume @pocmo will add telemetry so we can have a nice histogram for analysis.
In general, I believe once we have a first working implementation in the product, we will be able to test it out and "feel" it and address anything we might have missed...can't wait!
@jbreckmckye Thank you for your comment. You are definitely not alone with that. There have been a lot of discussions around if and how we should support multitasking. If you look at our current spec you will see that we won't introduce management of single tabs in a session and limit the number of total concurrent tabs. Hopefully this will still support your use case of a limited focused browsing session.
@antlam @brampitoyo Per guidelines I think this dialog doesn't require any actions (replace/cancel). Compare with our dialog to select a new default search engine.

@antlam @brampitoyo Per guidelines I think this dialog doesn't require any actions (replace/cancel). Compare with our dialog to select a new default search engine.
We might not need that dialog anymore if we're away from the "mini expanded FAB bubbles" UI.
Here's what I've been going with recently in terms of visual design: the expanded sheet.

@pocmo trying to understand if there are more strings needed as you added the label "needs strings" back
Yeah, I think we might need new strings for the sheet above ("Erase everything in your World") and maybe for the tab counter floating button (for accessibility only).
@bbinto since erasing is an all or nothing thing, (ie you can only erase or not erase, you cannot erase only 1 tab at a time) my recommendation for the button is: Erase browsing history
The a11y string should be: Tabs open: <#>
@lime124 am also sharing a design comp @antlam shared with me - not sure if we need other design elements (like a close button or X on each tab's line in the multitasking menu or if you can't close them one at a time.
EDIT by antlam: screenshot deprecated
not sure if we need other design elements (like a close button or X on each tab's line in the multitasking menu or if you can't close them one at a time.
I'll post finalized visual specs later but I don't think we need a close button or an X on each tab's line since we aren't supporting single-close in the first iteration
Wouldn't it make more sense to show the blue <> button (as in the previous mockup) when not expanded and the garbage bin only in the expanded menu? In my opinion the additional tab count button adds too much clutter to the page if it is expanded by default.
For closing tabs, maybe we can just swipe them away in the expanded sheet?
I鈥檝e updated my multitasking specs with the latest round of UI that @antlam had designed. The spec reflects the decisions made at the meeting we鈥檝e just had, and should represent the latest design.
Telemetry probes are documented in the wiki. I added additional events for opening new tabs and actions that can be performed in the tabs tray. Additionally open and erase events (also already existing!) will report the position of the currently selected tab and the total number of tabs as telemetry extras.
I'll close this bug (all tasks are done) and file follow-up bugs for additional work that might be needed (to have separate discussions; No-Jun already filed some too).
I鈥檝e updated my multitasking specs with the latest round of UI that @antlam had designed. The spec reflects the decisions made at the meeting we鈥檝e just had, and should represent the latest design.
Thanks @brampitoyo ...where can I find them?
Update: found them, sorry!
@pocmo just reviewed the Telemetry wiki, and <3 it. Thanks.
I can't wait to see if these numbers will go down now: https://mozilla.slack.com/archives/C4D7TER5G/p1503063134000541
Logging conversations from various threads here:
V1, unlimited number of tabs for now, monitor histogram
V2, revisit and refine purpose of multitasking using tabs/other means #1248
Most helpful comment
We might not need that dialog anymore if we're away from the "mini expanded FAB bubbles" UI.
Here's what I've been going with recently in terms of visual design: the expanded sheet.