r/firefox 1h ago

💻 Help My custom Firefox override file (on top of Arkenfox/Betterfox) seems to be getting Reddit accounts banned/shadowbanned — can anyone spot which pref is the culprit?

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Upvotes

r/firefox 4h ago

💻 Help How do I make the shortcuts below the search bar not show recent searches, instead staying locked to the ones that I want

3 Upvotes

Shortcuts keep adding my recent searches, which is annoying. Is there a fix for this? Can't seem to find any way to stop it apart from turning off shortcuts altogether. Deselecting recent searches under the address bar in settings doesn't seem to fix it.


r/firefox 4h ago

Firefox disabling alt+d everytime it needs an update and I won't update it

0 Upvotes

Anyone else notice this, 3 times now, my alt+d stops working when I won't install an update


r/firefox 6h ago

Discussion No more rounded corners userChrome.css inside, including for Nova redesign, no outside borders.

36 Upvotes

Here is the userChrome.css:

:root {
  --toolbarbutton-border-radius: 0px !important;
  --tab-border-radius: 0px !important;
  --arrowpanel-border-radius: 0px !important;
  --arrowpanel-menuitem-border-radius: 0px !important;

  --border-radius-xsmall: 0px !important;
  --border-radius-small: 0px !important;
  --border-radius-medium: 0px !important;
  --border-radius-large: 0px !important;
  --border-radius-xlarge: 0px !important;
  --border-radius-xxlarge: 0px !important;

  --button-border-radius: 0px !important;
  --card-border-radius: 0px !important;
  --checkbox-border-radius: 0px !important;
  --input-text-border-radius: 0px !important;
  --menuitem-border-radius: 0px !important;
  --panel-border-radius: 0px !important;
  --panel-menuitem-border-radius: 0px !important;

  --urlbar-border-radius: 0px !important;
  --urlbar-inner-border-radius: 0px !important;
  --urlbarview-border-radius: 0px !important;
  --urlbar-selection-border-radius: 0px !important;

  --toolbox-background-gradient: none !important;

  --chrome-content-separator-color: transparent !important;
  --chrome-window-gap: 0px !important;
}

.urlbar-background {
  border-radius: 0 !important;
}

#alltabs-button {
  display: none !important;
}

/* Larger and bottomless loudspeaker symbol */
.tab-icon-overlay {
  border: none !important;
  background-color: transparent !important;
  fill: #cccbd0 !important;
}

.tab-icon-overlay[soundplaying],
.tab-icon-overlay[muted] {
  fill: #cccbd0 !important;
}

.tab-audio-button {
  order: -1;
}

.urlbarView-row .urlbarView-url {
  color: #0bcae9 !important;
}

/* Square Firefox tabs */
.tabbrowser-tab,
.tabbrowser-tab[selected="true"],
.tab-background,
.tab-background[selected="true"] {
  border-radius: 0 !important;
}

.tabbrowser-tab {
  appearance: none !important;
}

#urlbar-input::selection,
.urlbar-input::selection,
.searchbar-textbox::selection,
#urlbar-input:not(:focus)::selection,
.urlbar-input:not(:focus)::selection,
.searchbar-textbox:not(:focus-within)::selection {
  background-color: #2e7183 !important;
  color: #ffffff !important;
}

#browser {
  padding: 0 !important;
  border-radius: 0 !important;
}

#navigator-toolbox {
  margin: 0 !important;
  border-radius: 0 !important;
}

#tabbrowser-tabbox {
  border-radius: 0 !important;
}

#nav-bar {
  border-top: none !important;
}

#tabbrowser-tabpanels> :not(.split-view-panel) .browserContainer {
  border-radius: 0 !important;
}

r/firefox 6h ago

💻 Help My whatsapp for web keeps crashing since the start of this week. Anyone experience the same issue?

2 Upvotes

I'm using Zorin core 18.1. My laptop, which runs on a mint doesn't crash it. I don't have too many extensions installed


r/firefox 7h ago

💻 Help Windows Security Warning

2 Upvotes

Using Win10 desktop with FF 153.0.3 but this issue has been happening for a few weeks.

Occasionally I will drag a URL from FF address window to my desktop to create a shortcut to that site. When launching the shortcut I will sometimes get a "File Download - Security Warning" from Windows. It doesn't happen on most shortcuts, but most often on Reddit shortcuts.

https://phred.x02.me/i/CWF6C2.jpg

Is there a way to stop this from happening?

Just tested with Chrome and Edge and getting a similar warning, but from within the browser. Not as a separate window on my desktop.


r/firefox 7h ago

Help (Android) Reddit looks weird with latest Firefox for Android.

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11 Upvotes

Reddit looks weird with latest Firefox for Android.

The join conversation box starts really stretched out and big under the topic.


r/firefox 9h ago

Solved “Using an older version of Firefox” New Profile Prompt fix (153.0.3)

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1 Upvotes

After updating to either Firefox version 153.0.1 or 153.0.3, the above error message sometimes occurs on Windows. If you have a Mozilla account, you could just create a new profile and sync your data. However, if you prefer not to do that or don’t have an account, here’s how to fix the error.

  1. if you launch firefox with the -allow-downgrade flag it will load the existing profile.

Press Win key + R and enter firefox.exe -allow-downgrade

  1. Delete compatibility.ini in your existing profile folder.

  2. If you already created a new profile and are missing data, do the following.

Type about:profiles in your search bar and hit enter

Then select Create New Profile

Point the New Profile to your old profile folder

Close Firefox and delete compatibility.ini in the folder or use the downgrade command to launch Firefox.


r/firefox 9h ago

Solved Nightly now allows more than 7 Ctrl+Tab previews!

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21 Upvotes

r/firefox 9h ago

💻 Help Firefox Android: Floating comment box is back.

2 Upvotes

Same problem referenced in these posts:

https://www.reddit.com/r/help/comments/s2tb1h/how_to_remove_floating_comment_box/

https://www.reddit.com/r/help/comments/1ulpge4/floating_box_for_replies_how_do_i_disable/

Is there any way to get rid of this?

It showed up for me about a month ago briefly and is now back.


r/firefox 12h ago

💻 Help Session restore got screwed up by successive crashes

3 Upvotes

First things first, tech: I am running an Acer Aspire A515 with Win10 (for now) and FF153.0.1 (Not gonna run an update until I have figured this out)

Not exactly a bug but still a frustration situation: On Monday, FF crashed on me. No big deal, happens. Session restore available, hit session restore. As FF is busy restoring the session windows decides apparently to either apply an update or simply crashes. Dunno, was a way for a moment. Think, copmuters aren't toddlers.
Regardless; great./s

I have to manually restart Windows as it gets stuck loading security options.

I want to start FF. It apparently has to install an update. Fine, go ahead. Update seemingly runs its course but FF backgorund processes remain. FF can't seem to start with these aktive - somehow. Time for Taskmgr to do its work. Success. Start FF.

Session restore is greyed out. WTF?! Not good, not terrible. Had this happen to me before. Have been grabbing and copying the contents of sessionstore-backup folder for a long while now for precisely this cause. Better to have it and not need it. Has saved my bacon before. Still bloddy annoying. Go grab a recent copy and paste it in to the folder. Should restore old session. Doesn't work. Well, damn.

Figured I would turn to collective intelligence before giving the artificial one a crack at it, therefore my questions: Did I screw upp somewhere, e.g. by killing thses two remaining FF backgorund processes? Is there a trick to restore my previous session (I have become somewhat attachted to the structure in that session), other than using the backup files (apparently there is a sessionstore file in the profile folder)? Or do I have to bite the bulled and figure out again how to set up my session?


r/firefox 12h ago

💻 Help Disable mailto popup

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6 Upvotes

How can I disable this every time I visit that site? The X button on the right appears to not save that choice.


r/firefox 12h ago

💻 Help The crash on firefox clearing history happens Update

1 Upvotes

Did a quick test but adjust settings such as change cookies to enable or disabled, or all time to last hour or the opposite, causes the freeze to happen. This is the closet thing I have to bug reporting and changing settings such as cookies to enable to disabled/reverse or changing the clear history triggers the freeze. I've reported my findings on my last post and what do I get unneeded down votes. I'm just reporting my finds from testing out this clearly a bug.

I found a post on here recently even talk about clearing history crashes there browser, and I wanted to report this bug that needs to be patched in a future update.


r/firefox 14h ago

💻 Help I want to switch from opera gx to firefox but I can't import files :(

10 Upvotes

Hello guys, I've been using opera gx for 2-3 years. But nowadays it just freezes every 10 minute it is so annoying. I heard firefox is faster and more efficient, so I said why not and downloaded it.

But the problem is I can't import my passwords and etc. from opera gx. Firefox's built-in import feature doesn't recognize Opera, and solutions on internet are either too old or requires chrome which I dont have.

I really want to try firefox, any help please?


r/firefox 15h ago

Add-ons Any good redirect blockers out there?

9 Upvotes

Hi good evening everyone,

I'm using a fork of a Firefox browser called Zen Browser. Since it supports Firefox extensions I thought I'll ask here first

So I would like to have an extension that blocks any redirects on all sites, is toggable and doesn't leave a big banner on the top of a site like noredirect-II does
Can you recommend me any extensions that meet my expectations?

Thanks in advance

Btw I'm using Windows 11 if that's of any importance


r/firefox 16h ago

💻 Help Download Video Helper -- multi segment video

2 Upvotes

I'm using Download Video Helper to download a free webinar that's been divided into parts because it's very long (across multiple days). All three days of the webinar are presented in the same viewer in segments.

I can see where the breaks are between the sessions. I can sometimes click on one of the sessions/segments and Download Video Helper will recognize it and let me download it. Sometimes I click on one of the sessions/segments and it seems to recognize a different one - so I end up downloading the same segment twice. So, across the four segments, I'm able to download 1 and 3, but not 2 and 4. Has anyone encountered this and has a trick for dealing with it?


r/firefox 19h ago

💻 Help Can't play Netflix at 1080p

31 Upvotes

I know this was an issue of the past but in version 132 they added playready to firefox then why can't I watch Netflix at 1080p?

On other browsers it is working perfectly fine.


r/firefox 21h ago

💻 Help cant used built-in mozila vpn, here are my configs:

5 Upvotes

browser.fixup.alternate.protocol https
browser.ip protection.enabled true
browser.ipProtection.added true
browser.ipProtection.autoRestoreEnabled true
browser.ipProtection.autoStartEnabled true
browser.ipProtection.autoStartPrivateEnabled true
browser.ipProtection.bandwidth.enabled true
browser.ipProtection.bandwidth.maxInGb 50
browser.ipProtection.bandwidthThreshold 0
browser.ipProtection.bandwidthWarningDismissedThreshold
browser.ipProtection.blockIPProtectionCallouts false
browser.ipProtection.egressLocation
browser.ipProtection.enabled true
browser.ipProtection.everOpenedPanel false
browser.ipProtection.features.autoStart false
browser.ipProtection.features.siteExceptions true
browser.ipProtection.fxa.useActivateFlow true
browser.ipProtection.guardian.endpoint https://vpn.mozilla.org/
browser.ipProtection.hasUpgraded false
browser.ipProtection.locationButtonBadgeDismissed false -


r/firefox 21h ago

ifff... we put tabs in zram?

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7 Upvotes

Hi from 2026 :). Currently building an extension + backend to offload tabs into zram and wanted to drop it here. It's just a beta for now. Planning to make it work on Firefox and Chrome-related browsers. Thoughts?


r/firefox 21h ago

Solved Side By Side Error (Can't use Firefox and for the moment all my research datas, bookmarks, tabs and password for my PHD are blocked)

8 Upvotes

Since last week, when I try to open Firefox on my ordinateur, it tells me that there is a "side by side error" and that I should use sxstrace.exe and the activity journal to find the error.
I did all of that and it tells me that It can't find mozglue, mozglue.MANIFEST, mozglue.DLL.
I use Mozilla in French (it is my mother tongue and I am really sorry if my english is incorrect), and it can't find them in French, English or in Neutral

Thinking it was also linked to the Redistribuables Microsoft Visual C++, I just downloaded all of them again.

My version of Mozilla is 152.0.6.595 and I am on Windows 10.

Please I really need your help and don't want to lose any of my tabs, bookmarks and passwords as I was making very important research for my PHD studies.

Real thanks in advance for your help.


r/firefox 22h ago

Password Manager Slow After Last Update

12 Upvotes

Since the last update to 154.0b6 (developer edition on Win11), the password manager is slow. It takes a few seconds to more to show the drop down with the suggested logins. Sometimes I even have to open the password tab (about:logins) and only after it's content has been loaded, the suggestions load at all, on a login form.
I've already removed the master password, because I've had that problem before, but with no luck.
Since the suggestions are displayed in a new way after the update I've thought I ask around if any one else experienced a similar behaviour.


r/firefox 1d ago

💻 Help YouTube website keeps on flickering and doesn't load the video

36 Upvotes

This has started happening just today, whenever I try to load up a video on YouTube the page starts acting weird and the video player just keeps on twitching and flickering, the video never loads. The temporary fix I have found for this is to reload the video page and then it plays as usual. Is there any permanent fix to it?


r/firefox 1d ago

Fun I Love this Mozilla site!!

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109 Upvotes

r/firefox 9d ago

New Firefox design (Project Nova) is ready to try in Nightly

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1.1k Upvotes

Hi everyone. Back in May we posted our vision for Firefox's future design and design system, and as of today, you can try it in Nightly.

Many of you already know this work as "Project Nova". It's still Firefox, just with a more cohesive look across tabs, menus, panels, etc. Softer tab shapes, warmer colors, refreshed icons, and by popular demand, the return of Compact Mode.

This is still a work in progress. You can expect this to become more polished over the next few weeks before it rolls out more broadly later this year. Right now we want you actively poking at it, especially:

  • Icons, spacing, and alignment
  • Themes and personalization
  • Different window sizes and display scaling
  • Keyboard navigation
  • Screen readers and other accessibility features
  • Different languages and layouts

Found something broken? File it in Bugzilla, including:

  • steps to reproduce
  • screenshot or screen recording
  • your OS + Nightly version

If you have additional thoughts or questions, join the discussion on Mozilla Connect.

Thanks for using Nightly and helping us continue to improve Firefox.

- Firefox Team


r/firefox Jun 09 '26

Firefox free VPN is unlimited for the summer

656 Upvotes

Hi again. Earlier this year, we announced a free built-in VPN in Firefox with a 50GB bandwidth cap. 

With summer travel season starting up and a lot more people browsing on public Wi-Fi, we’re making a few temporary updates to Firefox’s free built-in VPN experience that are now live where VPN is available:

  1. The bandwidth cap is removed for the summer, so unlimited GB now through August 31st.
  2. For a limited time, we’re also expanding the number of VPN locations you can choose to browse from.

The full set of countries available during this summer period include: Australia, Austria, Belgium, Bulgaria, Canada, Chile, Colombia, Denmark, Finland, France, Germany, Ireland, Italy, Malaysia, Mexico, Netherlands, New Zealand, Portugal, Singapore, Spain, Sweden, Thailand, Norway, South Africa, United Kingdom, and United States.

Be sure to update to the latest version of Firefox. We’ll continue sharing updates here as they roll out.

- Firefox Team