The new Firefox design is here
blog.mozilla.org
blog.mozilla.org
I am still having to use an extension (Sidebery) because Firefox failed to implement vertical tabs half as good. On my MBP, I have two rows of small panel icons to switch between 2 rows of 8 different categories of tabs (16 panels). Below that, I have 3 rows of pinned tabs on each panel (24 pinned tabs). Below that, I can see 24 open tabs without scrolling. That's 48 visible tabs per panel and with a single panel click, I can see a different set of 48 tabs. That makes a total of 768 tabs accessible via a single click. [edit] I should add that I can see 32 characters of the tab title so it is easy to know at a glance what the tab is about. [/edit] Now that is an amazing UI/UX - not some designer pill shaped tabs (that Safari has had for years).
Mozilla: why in the hell do I need to trust some extension builder to give me an amazing UI/UX? Instead of copying Apple's bad decisions - innovate!
p.s. I don't get why in the hell anyone who has more than 10 tabs open at once isn't using vertical tabs? Especially when most monitors have more horizontal pixels than vertical.
Because Mozilla is basically owned by Google, neither of them care about you or your UX, and Ladybird isn't ready yet.
I wouldn’t really expect base experience to match what it offers, so as long as Firefox doesn’t break extensions for power users, I am more than happy to see them experimenting with stuff that could help to win back some of the audience.
You mean, as long as they don't break them any more than they did a few years back? Yes, I'm still salty about that loss.
But to your point, I agree with you. The native Firefox UI hasn't been one I loved for many years, and isn't getting any better. But I am still able to (mostly) massage it into something I'm OK with. As long as I can do that, then I'm fine with them doing whatever they need to do with the default look-and-feel.
They don't need to do anything that they have decided to do. The evidence of this is that nothing they do has led to them not shedding users. In fact, the only thing that gives them a user bump is on the rare occasions that they are allowed not to do exactly what Chrome did, such as V3 and not having AI for 5 seconds before having AI then backing away then moving forward carefully.
Firefox is the browser that intentionally destroys itself. Massaging it into something I want to use involves so many chores and so many extensions (often obsolete and unmaintained, or migrated off the main site onto github or more obscure forges) that I can't recommend it to anyone normie and my attack surface is virtually infinite.
Because you're a "long tail case" tab user? Your case might be the poster boy for an active extension ecosystem that caters to niche needs.
Setting my browser up the way I did was a serious PITA and it didn't have to be.
If it was up to me, I would get Mozilla to hire the author of Tab Mix Plus and to fold that project directly into Firefox.
The only reason why I am running with vertical tabs is because I am running natively-vertical EIZO monitors that are 2k, so I have enough horizontal space to throw up most websites.
Update: for those unhappy with the changes, you can roll them back for now:
about:config -> browser.nova.enabled -> falsee.g. https://www.firefox.com/en-US/firefox/152.0.4/releasenotes/
> A classic grey palette for a calm, focused feel.
https://addons.mozilla.org/en-CA/firefox/addon/firefox-proto...
/disable gradient
/ 1. Remove the toolbar/tab bar gradient completely /
:root:not([theme-image-in-toolbox]) body,
:root[theme-image-in-toolbox] #navigator-toolbox {
background-image: none !important;
}/ 2. Strip Nova purple accent color/focus outlines from the URL & search bar */
:root {
--toolbar-field-focus-background-color: var(--toolbar-field-background-color) !important;
}.urlbar-input-container, #searchbar {
--toolbar-field-border-color-focus: var(--toolbar-field-border-color) !important;
box-shadow: none !important;
}/* Hide Kit mascot illustrations from menus, dialogs, and in-app alerts */
.mascot-icon,
.panel-header-mascot,
[mascot="kit"],
.onboarding-mascot-container {
display: none !important;
}The old UI has less visual noise (at least dark mode on Windows). The new theme has random highlights and high-contrast lines everywhere that draw attention to the browser UI. I want the browser to fade into the background not stand out.
:root {
--border-radius-small: 0 !important;
--border-radius-medium: 0 !important;
--border-radius-large: 0 !important;
--border-radius-xlarge: 0 !important;
--border-radius-circle: 0 !important;
}Improve Adblock capabilities, better tab and session management, improve sync, improve site css and js management, built in dark-mode.
Hell, just look at the list of most used extensions, it’s a great place to start understanding what users want.
So they are practically speaking the only game in town (Brave being the exception on Chrome as they are keeping support for UBlock Origin)
Firefox Nightly on Android also allows desktop extensions to be used.
It has built-in dark mode, check out the Themes in your settings.
Building a whole user interface to declare the setting of that preference per-site seems like a pretty high cost for something that won't be used by very many people. Most people just want the site to match their current preference. Instead, websites usually provide a way to override the setting which is stored as a cookie or whatever. I think overriding that value belongs in an extension, not as a core browser feature.
[1] https://developer.mozilla.org/en-US/docs/Web/CSS/Reference/A...
The whiplash from seeing that selectable on my screen to seeing someone claim it's not there in the same 60 seconds is really something.
Sadly, I think some of the heat is driven by culture war issues so people feel the need to pick a fight rather than simply ignoring something which doesn't suit their needs.
> OMFG! Look at the massive amount of space between the stupid pill shaped tabs ... If I wanted to use a shitty safari UI that sacrifices usability for cutesy looks, I would use Safari. ... Mozilla: why in the hell do I need to trust some extension builder to give me an amazing UI/UX?
and just a few top-level comments downthread:
> Are they forcing this? You have got to be kidding me. Why is this happening? Is this making them money or is this to cater to the ego of some product manager? ... What a fucking hostile, brazen change. Yeah, fuck you too Mozilla.
Something about Firefox makes people behave like absolute maniacs.
This will expose my internet user age but I remember Marcos Moulitsas talking about DailyKos redesigns, and he noted, correctly I think, that regardless of what you do, a visual redesign will be interpreted as an apocalyptic event to approximately 1/3 of the user base. But it tends to be a flame that burns bright but brief.
Or for another version: there was a time in the history of Facebook where redesigns to the desktop version caused user outrage and mass organization into aggressively titled Facebook groups, protesting for a change. Now I personally think that in many significant respects Zuckerberg is a fool, his investment in meta and VR has been a joke and his perspectives on AI are naive. But I actually think the design and iteration of Facebook itself has been a savvy series of careful iterations, and going this long without shooting himself in the foot is not something to be taken for granted.
Anyway, my point is as a going concern whenever you do a redesign you have to price in a certain amount of recreational outrage from a percentage of the user base that burns bright but brief.
That just means that, once it's been established that you're ignoring them, everybody who vocally hated the new design will switch to silent resentment of you for what you did, forever and ever.
No.
You're talking about a browser that has shed about 92% of its userbase since its peak. Firefox was never a default or a pushed selection, people were drawn to adopt it because they wanted it, and almost all of them were alienated and confused by the decisions that the browser made and continues to make.
In trying to make sense out of this own goal, they see the massive payments from google to firefox, they see firefox intervening in google's antitrust case, they see executives being paid an enormous amount of money for continuous failure, and they watch the slide continue. To see these and avoid understanding this as firefox taking a dive (that should be illegal, would be nice if we had antitrust) is a sort of blindness. It's also not to be blamed on some UI designer who just got there a few years ago - those red herring "real people" - these are corporate decisions.
If I invested with you, and you lost 92% of my money, there's no degree of heat that would be out of proportion.
> unbelievably hostile product space.
If you're subsidized a half-billion a year from your biggest competitor, and you started with a browser that was probably 35% of the market at peak, there is nothing hostile about this product space. It is the easiest job in the world. Especially if the job is to fail.
I don't think so. I've never been alienated by it. It's a browser. It does browser things. It's fine.
What decisions have confused and alienated you? People in this thread are screaming bloody murder because of a couple pixels on tab bar and a low-contrast gradient. This isn't a rational reaction to a minor graphical tweak, it's bonkers hysterics.
It turns out it's really tough to compete with one of the largest companies in the world when they are very highly motivated to capture as many users as they can (unlike Microsoft around the turn of the millennium). I think there are things Firefox could do to recapture the audience[1], but I also don't think turning the tabs into pills or whatever justifies the kind of language being used in this thread.
[1] I think implementing new popup blocking would generate some real positive conversation: https://www.smokingonabike.com/2025/12/31/web-browsers-have-...
1. https://venturebeat.com/dev/firefox-on-fire-with-500m-users-...
2. https://data.firefox.com/dashboard/user-activity
The inconvenient fact for these anti-Mozilla narratives is that most of those losses were in the 2010s before any of the side bets that people point to. The side bets era is approximately the 2020s, and the big market share losses were approximately in the 2010s, and so the side bets couldn't retroactively have caused the market share losses, and the actual market share losses of the 2020s are real but not consistent with the hysterical narratives that come out in the hn comment sections.
And the other inconvenient fact for these polemics is that actual driver of market share change is Google's dominant position as the world's most visited website and as a distributor that gets to pick the default browser on more than one billion Android devices and counting.
When Microsoft Edge grew it's market share, it wasn't because users A|B tested it against Firefox and found it more preferable, it's because it was a preinstalled default that gained ground over device churn. When Opera had practically the perfect browser in 2011-2012, they didn't conquer the world. When Mozilla did their massive quantum overhaul that delivered huge advances in performance and stability, their market share continued to decline. There are natural experiments left right and center testing the claim that market share is a perfect 1 for 1 response to changes in browser design, and so far they've failed to confirm that hypothesis.
Meanwhile the accusation seems to change on a nightly basis. Yesterday someone was outraged that anyone would dispute that average users don't care about any of this, they just want whatever browser is in front of them as long as it's fast and stable enough (so they claimed). Today, you've tagged in to claim users are hyperfocused on the minutia of Mozilla's design decisions on a day to day basis. Tomorrow somebody's going to claim it's really about something else. The only thing these competing explanations have in common besides hysterical exaggeration, is that they rely on unverified Trust Me Bro stories that never address the inconvenient fact that Google's distribution advantage is the primary driver of market share change. It feels like recreational outrage.
Who says they don't? They've pushed 23 new releases since 2025 with thousands of updates that include exactly the bug fixes, performance improvements and security fixes you're talking baout. This latest release, v157, includes the built in dark mode you're asking about (I just saw it on the popup on first launch when installing this new version) and the release notes describe improvements to tabs. v156 included huge performance improvements and they're regularly pushing tons of CSS updates across practically all of the releases.
I don't understand why people claim these things aren't happening when they're regularly documented on their release notes page.
Practically, it's most useful when I have two references for the same thing I want to move together as I work on that thing. E.g. Jira + Functional Spec as I do things related to them.
For a non technical user it is much easier to right click a link (for example a reference in a news article) and choose Split View than arrange two windows (which may involve 2 different monitors).
For a Teams/Zoom screen where you are sharing only one app rather than whole desktop, again split may help.
Also good for mental switching, as you can open a link to the side and either promote to it's own tab/close and carry on with same page rather than have it open separately and break the flow
It's just another tool.
It means that both tabs get maximized and minimized at the same time, and the two tabs are always side by side. Which means if I need to jump to another task, like answering a message or joining a video call, I can get back to my work faster. It’s a small thing that helps with context switching.
I do it when I consider both side of the Split View one unified context I am working on. I do it not only with browser tabs, but sometimes terminal tabs. I most commonly do it with IDE tabs.
It makes a lot of sense if one uses subject-based browser windows (e.g. 1 window == 1 subject); it keeps all tab organization within the browser and makes it easy to minimize it, move it to different screens/desktops, save/restore it, etc consistently with less overhead (no secondary organization system [such as that of the window manager] involved).
This becomes even more valuable for cross-platform users who sync and can’t rely on their favorite uberleet-haxor-wm package being available everywhere.
- The split view is a special looking tab you can come too easily. - You can have several split views in the same window. - Selecting what tab you want in the split view is much cleaner than tearing off tabs into windows. - No conceptual switch between "tab" and "window".
In fact, I propose that all computer User Interface design proceeds as:
D(s) = (1 / (c * s + 1)) * (A(s) + N(s))
Where c is some constant, A is what Apple is doing and N is random noise.Of course, I'm on Windows, where it doesn't make any sense to incorporate Apple's Liquid Glass design guidelines. When I do want an Apple-like interface, I'd rather have something from the 10.11 - 10.15 vintage please. I wouldn't mind if there was a clearer option to switch back, but I'm not seeing that in the Appearances preferences.
I tried ditching Arc for Zen, but it just doesn’t have the same level of polish. It feels like a copycat, which it is. I hope it gets better with time so that I can switch to it some day but it’s not there yet. They should be able to match Arc though since it’s development is stopped.
I use Safari because it syncs well between macOS and iOS and I like how Apple has been experimenting with it for the past years (since iOS 21 iirc). They try new stuff with the UI and it works for me.
They just had to look at Arc for what people want out of the future of browser design and instead they committed this own goal.
Anyway, I've had a different theme for each profile for a couple of years so I can tell them apart at a glance. My main profile is dark gray, and the other profile is green. With this new update, now the themes keep syncing and winding up the same. I tried changing the sync.prefs for all of the activeThemeID keys to false in both profiles, but the themes keep syncing up. Either that, or the themes keep getting reset back to the default theme, which I'm not using for either one.
Has anyone else noticed something like this?
Are they forcing this? You have got to be kidding me. Why force a change like this instead of adding this as an additional UI customization feature? Why is this happening? Is this making them money or is this to cater to the ego of some product manager?
The "Ash" theme saves the theme for me. The sidebar is easily disabled by clicking the settings icon on the bottom of the sidebar and selecting the easily spottable option. I cannot find how to disable this border radius. "about:config -> browser.nova.enabled -> false" only slightly fixes it, does not disable it.
I can't believe they're forcing these pills. What a fucking hostile, brazen change. Yeah, fuck you too Mozilla. Looks like I can't do anything about it! You punked me!
https://connect.mozilla.org/t5/discussions/the-new-firefox-d...
Now, will Mozilla listen to this overwhelming amount of feedback? Or smugly ignore it.
EDIT: I found a combination that seriously helps. Commenting top-level with the solution.
Turd polishing. It's easier than doing real work fixing and improving the browser. This exact scenario has happened countless times before, and it will keep happening. Mozilla "reimagines" their UI. There's huge controversy. Userchrome.css files gets published on github and then abandoned. Bugzilla reports are created and locked for being toxic (ie. disagreeing). /r/firefox mods work double shifts to silence dissent. HN has a >1000 comment argument. Some percentage of users flee to Brave/Vivaldi/etc., while the rest settle in to their stockholm syndrome.
v89 was when I got out.
Whenever I have to fill out a new web form on a random site, there is about 50% chance that it will break. Regrettably and unsurprisingly, they do work perfectly in Chrome-based browsers.
Firefox would probably be interested in a report if you have an example of it: https://support.mozilla.org/en-US/kb/report-breakage-due-blo...
But your comment motivated me to discover the "hamburger" > "Help and Report" > "Report Broken Site" menu. Will use it next time I come across a broken form.
My first reaction is to disable adblock and other extensions, but lately that has not been helping. I blame the lack of testing/support from web developers.
Why is every border completely rounded?, on the tab bar it's almost touching the favicon, with container groups it looks even more busy.
At least the colors for the tab groups are better than before.
- Disable sidebar using settings icon on the bottom of the sidebar
- Enable compact mode
- Use new Dark theme (NOT ASH)
- about:config then browser.nova.enabled -> false
Thankfully user-chrome still seems to work, so these things can be overridden (and LLMs make those overrides easier to write & maintain).
"Pills here!"
―LouisBesides the fake macOS window controls for some renderings, I don’t see how one would close, minimize, or zoom windows with this new design.
Blurry misaligned icon set.
Donate to Ladybird!
With memory prices increasing, many people unable to afford new machines, and web browsers being one of those things that can potentially take a lot of system resources, I wish the Firefox team would prioritize CPU and memory performance of the core engine for users with lots of tabs.
I have stuff like 'Auto tab discard' installed but it seems to break other things, like 'Close Duplicate Tabs'.
More seriously, it's nice to see this UI finally copied by a major browser, but sad that there's still no real replacement for Arc.
Vertical tabs are the dumbest thing they are wasting effort on. That firmly belongs as an extension, not a browser feature. Same problem as Pocket and the VPN garbage.
I'm currently using Zen since it's the closest thing to Arc with full MV2 support. If native Firefox with the new UI can do what Arc/Zen can do, I'll switch to it probably.
Change for change's sake is so damn tiring.
So tired of this infantalization of software and design these days.
1. how to have rectangular tabs instead of pills - solved with gemini by creating css with content:
/* Square Firefox tabs */ .tabbrowser-tab, .tab-background { border-radius: 0 !important; } .tabbrowser-tab[selected="true"], .tab-background[selected="true"] { border-radius: 0 !important; }
2. how to have tabs touching the top of the window so I can easily switch between them by having cursor on top of the screen since there is gap between top of the window border and tab border - tried removing gap with script, but seems the best working solution is moving window up off the screen a bit to achieve desired result
3. how to hide close tab button and close it with double click
4. and I need to install gesture control, can't imagine anymore using desktop browser without mouse gestures (left to go back, down to close the window) - Gesturefy seems OK, though it doesn't work in settings and firefox pages like extensions etc.
You can turn that off in the settings if you like. Settings -> Tabs and browsing -> Disable "Show an image preview you when you hover on a tab".
99% of users don't need to generate virtual card numbers on the fly, so won't be a high priority item.
Mozilla have been terrible at marketing and strategy and innovating technically from a end user experience perspective. With the amount of guaranteed money from the Google deal they had annually, they should have done so much more.