Take Project Nova for a spin in Nightly!

[AshleyT]

Hi there! I'm Ashley, Senior Staff Product Manager for Firefox. After months of updates on Project Nova, it's finally in Nightly, ready for you to see for yourself. We're modernizing Firefox from the ground up to ensure it remains a fast, secure, and highly customizable companion for today’s internet.

This is still early days, so you'll notice some rough edges — a few things may look unfinished or inconsistent for now. Keep your Nightly up to date to see the latest. 

As a reminder, the Project Nova updates include:

• Simpler navigation and a redesigned Settings experience, now live in release
• Refreshed tabs, icons, spacing, and browser surfaces
• More ways to make it yours, with rich new themes, wallpapers, and personalization options that let Firefox match your style.

We're grateful for all the thoughtful feedback we got on our earlier Connect post, on social media, and through user research. Based on what we heard, we've made some changes:

• We'll be experimenting with corner roundness settings for tabs to give you more options — coming soon in Firefox Labs.
• We brought back Compact Mode so there’s more space for web content and tabs
• We added more neutral standard theme options.

You can learn more in our blog post.

See it first in Nightly

Nightly is where this work takes shape in the open, and we wanted you to be among the first to see where it's headed. Since much of what’s changed so far focuses on the look of the interface, keep an eye out for how these layouts feel during your day-to-day browsing. We're aiming for a clean, intuitive experience —so please look out for anything that feels off, like icons, spacing, alignment, or how things hold up across themes, window sizes, different languages, screen readers, and keyboard navigation. If something catches your eye, we'd love to hear about it.

Download the latest version of Nightly to see what's new.

Something's not right? File a bug.

If you find visual or functional issues with the Nova style changes in Nightly, please follow these steps:

1. Click this link to file a Bugzilla issue. We're asking everyone to file bugs this way, so we can easily keep track of all issues reported.
2. In the bug, please add steps to reproduce the issue, and if possible screenshots or screencasts. Please don't add severity and priority to the bugs — our triaging teams will handle that.
3. You can see all Nova testing bugs filed here.

Have overall feedback? Let us know here in Connect.

Drop a comment here to let us know your thoughts and suggestions. Thanks for being part of this.

[spiritschaser]

That's really cool!

Please, guys, don't stop and go ahead with the complete circular context and "burger" menus and may be circular window! (like old good K-jofol player). That's the point to be on the edge of the web browsing!

[robertwigley]

Please retain an option to disable the Nova UI. My main objection is the excessive use of rounded corners and pill-shaped UI elements throughout Firefox. I strongly prefer the cleaner, squarer appearance of the previous interface. A theme doesn't solve this because it doesn't restore the previous UI geometry. Please either retain browser.nova.enabled or provide an official option for the classic UI.

[DontChangeStuff]

I can't tell you how ugly and disturbing your project nova looks!

First thing in the morning, I've spent half an hour of my precious free time learning how to disable the damned thing, and for the first time since Firefox exists, I found a way to log in here, just so I can let you know:

STOP CHANGING STUFF! Your design department lacks talent. I suspect it's rich in family / friendly connections, so they can have a cozy, well -paying job. You do not need a design department, or artists. The browser should simply follow whatever theme windows is set to.

In fact, never, ever change layouts, buttons, anything else either. I'm in my prime, I can at least figure them out so far, even if it is bad. There are old folks out there who spent the vast majority of their lives without computers, but the modern age prompted them to become users in their autumn years. For them, even minor changes are not mere discomforts, but roadblocks that prevent them from using whatever browser or website's misguided management felt like "lol, we haven't had a nice, flashy UI redesign in a while!"

The only reason to redesign any UI, ever, is if something's not working properly. As the current example would have it: Design project nova the hell away, along with the people responsible for it, and never let it and them return.

G'bye.

[tuva]

I have to agree with folks above: Please keep the `browser.nova.enabled` flag exposed forever, so that I can keep this redesign reverted, forever, like Reddit's "old reddit" opt-out. I really don't understand this obsession with pills and """modern""" anti-features.

I get that some people find it OK. 
But I do not like it. I will never like it. 

Thank you.

[ugthefluffster]

Please keep browser.nova.enabled, or replace it with a supported option for the previous Firefox UI. I specifically prefer the previous tab design: the selected tab is clearly distinguished by its fill/shadow without the Nova outline, and the less-rounded geometry makes tabs easier for me to distinguish. userChrome.css is not an adequate replacement because it relies on unsupported internal selectors that can change between releases. Please keep an official way to select the classic appearance.

[utterBS]

FWIW, the new 157 version of FF just updated.  I have used FF for a long time and set it up for MY use.

I find the out of the box Nova with the 157 update disgusting. 

But Nova has had little effect on what i visually see with MY FF.

With Nova disabled

With Nova enabled

So while i think what has been done to FF totally sucks and was not necessary despite what the FF management might think, i can & will continue to use FF till i loose what control i seem to have in making it acceptable to me.

[olen]

I have disabled the new Nova .. It is not my taste. 

A user with name siffemcon also gave me another great tip 

To my userChrome.css I added

* {
border-radius: 0 !important;
}

It removed the rounded corner from tabs and the urlbar

Amazing why firefox tries to mimic chrome  😞

[utterBS]

Amazing why firefox tries to mimic chrome 

Exactly, so sad.

[JimmyKills]

This is terrible

[utterBS]

Man of few words   🙂

[Hades_]

Why go to all that trouble to copy Chrome when you already have something really great! For heaven's sake, stop with the round interface—it's just awful.

My only wish is to be able to turn it off.

[mtnsnp]

Please leave it optional. I love firefox, this new theme makes me want to remove it. The previous theme is great, which is, I don't even see it, I just use it and it disappears. This new theme takes over and I just can't get used it. Can't stop seeing it. I don't want the visual noise.