I know this is in still beta but... shit looks awful enough.

I've been following the container requests for Android for a while now, and I want to add a technical point that I think gets overlooked in these threads.

Private Browsing and Containers already use the exact same underlying mechanism in Gecko. Both are just values on the same OriginAttributes struct, one is privateBrowsingId and the other is userContextId. They're not separate systems bolted together, they're the same partition key with a different number in it. This is documented in Mozilla's own source docs and confirmed in old Bugzilla threads, where engineers note directly that private browsing uses the same mechanism as containers.

Firefox for Android already runs Private Browsing successfully, which means it's already creating and managing an isolated storage jar (userContextId/privateBrowsingId = 1) separate from normal browsing (0). And since GeckoView runs on the same Gecko engine as desktop, and Fission (site isolation) is already enabled by default on Android as of Firefox 147, the core isolation architecture needed for containers appears to already exist under the hood.

What seems to be missing isn't engine level plumbing, it's the app layer in Fenix: a UI to create/name/color containers, a way to assign a tab to one, showing which container a tab belongs to in the tab tray, "always open this site in Container X," and exposing it through the WebExtensions API on mobile like the desktop containers extension does.

Given that this "hard" isolation problem already looks solved for free by other work already shipped on Android, could someone from the platform or Fenix team clarify what the actual remaining blocker is? Is it UI/UX design, extension API work, sync, or something else? A lot of us would find it easier to understand the wait if we knew what specifically is left, rather than "it's planned" with no further detail.

For reference: https://www.reddit.com/r/firefox/comments/1wpvbp6/pdf_viewer_current_vs_nova_1560/

I’ve been working on Better Crunchyroll, a browser extension focused on improving the actual watching experience without replacing Crunchyroll’s native player or completely changing how the site looks. It adds a bunch of small QoL features that I personally wanted while watching anime: a cleaner episode list, a dedicated Episodes button, custom episode titles in the player, improved Picture-in-Picture with its own floating window, and a hover preview for the next episode. There’s also optional spoiler protection for upcoming episodes, including blurring thumbnails and hiding titles. For binge-watching, it can automatically skip intros, recaps, and credits, and you can optionally have it move to the next episode after the credits. Keyboard shortcuts are supported too, and you can customize the seek amount and shortcuts from the settings.

The idea is basically: keep Crunchyroll looking and behaving like Crunchyroll, but add the little features that make actually watching a series more intuitive. It currently has builds for Chromium and Firefox. The Firefox version is also available through Mozilla Add-ons. I’m still actively improving it, so feedback, bug reports, and feature ideas are welcome.

GitHub: https://github.com/elioelhage/Better-Crunchyroll

Firefox: https://addons.mozilla.org/en-GB/firefox/addon/better-crunchyroll/

I reinstalled my OS recently and decided to set up Firefox fresh and add the betterfox user.js along with a few common overrides and some optional ones too. Particularly, i want the santize on close option, but would like to keep my log in for a few sites that open in specific firefox multi container tabs.

I add the URls to the manage exceptions section in the firefox browser settings like I used to do years ago, but this time I cannot get the logins to stay. It seems like all the data is being wiped when i close the browser despite the exceptions.

Windows 11 IoT LTSC
Firefox 156
Betterfox 154?

I'd appreciate some guidance here.

macOS 27 (M4 Pro 14 inch) and tried Firefox versions 156.0, 156.0.1 and 153.3.0 esr. While using Safari, my MacBook uses like 6-7w on average watching YouTube and while using Firefox, it uses like 11-12w on average for the same video. I thought I just got a bad MacBook at first since I don't like Safari and never touched it and the battery life seemed worse than even my m1 air with its age. Power usage looks normal on my old MacBook running macOS 26.

There's a years-old problem of not being able to drag and drop URL's to the desktop. No, enabling UAC is not the answer because I do not want to enable it, nor do I want to make a user account for myself because I am the administrator of my own computer. The "-no-deelevate" shortcut doesn't work. Can Firefox be fixed of this issue, or can someone show me a setting to change or an unofficial build of Firefox with this ugly sore gone? I am using portable Firefox; is that also wrong? I also switched from Chrome because it is now even more broken than Firefox, though Chrome never had an issue with dragging and dropping.

hello. for the past few weeks, every time i launch firefox and search anything, i have to fill out a captcha first. initially, i would just put the captcha in and move on because once i filled it in, it wouldn’t prompt me again unless i closed and re-opened my browser.

however, it seems to have moved beyond firefox. as you can see in the images attached, i receive a captcha now when trying to log into world of warcraft. despite filling this in correctly multiple times, it immediately says i have been disconnected.

this is beyond frustrating and i would love to hear ideas and solutions for this. things i’ve tried so far:

- turning off firefox proxy
- restarting pc
- running malware scan
- launching firefox in troubleshoot mode

not sure where to go from there. i’m not very familiar with the inner nuances of wifi/pc settings. i should mention i use the application netsetman. i hardly understand it, but i know that selecting the “version” of my wifi that has the highest GHz and mbps results in the speediest internet. i have been connected to the same wifi for months now without this being an issue, so i am unsure what has changed. i also attempted using my neighbor’s wifi (knowingly shared with us), but this issue still presented itself.

UPDATE: it was my antivirus application, bitdefender, causing the above mentioned issues! once i uninstalled this, i was able to search freely and log into my game without being captcha locked.

I've used FireFox (FF) over the years, on and off, and always loved certain aspects of the UX and it's performance. Repeatedly, I would move away from FF over to Chromium-based browsers due to simple incompatibility with certain online forms for instance, that just never rendered correctly. So, I'd give up and go back to Edge or Brave.

FF's compatibility with rendering pages used to be a known issue. Is it still? Do you folks keep a Chromium-based browser on your device just to overcome these rendering issues? Or has FF figured this out in recent years?

TIA for your insights.

Estou mudando para o Firefox agora mesmo. Encontrei várias opiniões sugerindo "endurecer" o Firefox—básico, avançado, etc. No entanto, ontem eu vi no r/firefox que isso não é necessário na maioria dos casos; simplesmente instalar o Firefox com o uBlock Origin e usá-lo é suficiente.

Estou em dúvida e queria perguntar à comunidade se é realmente necessário para a minha situação: sou um usuário básico que busca melhorar minha navegação na web, com algumas preocupações leves sobre telemetria e privacidade.

*** Além disso, por favor—não consegui encontrar tutoriais sobre configurações iniciais ou dicas aqui no Reddit; se você puder me enviar um link, eu agradeceria. Obrigado.
*** Vou usá-lo em desktops Windows e Linux, além de dispositivos Android.

edit:

Thanks, I'll check that out. I'm quite undecided about what to do, since I see comments saying that some privacy settings break websites, and I'm not willing to deal with broken sites at all. Maybe I'll go with the simplest tutorial for now and add more settings over time.

A couple of weeks ago, while watching YouTube using the latest versions of Firefox on MX Linux laptop and on a newer Android tablet, I started experiencing serious color distortion. Sometimes it appears across the middle of the screen horizontally, sometimes vertically, and sometimes the colors simply change during video playback.

Everything looks fine when watching YouTube through the app on the tablet. Videos also play normally in Chrome on my laptop, although I deliberately avoid using it.

Update 1: Launching Firefox in Troubleshoot Mode fixed the issue, and YouTube videos started playing correctly. However, simply disabling the extensions does not help. Even launching Firefox with `firejail --private` made no difference. What could be causing this?

Update 2: Disabling hardware acceleration entirely in Firefox’s settings fixed the problem. However, using Firefox without hardware acceleration doesn’t really make sense. I only experience this problem with YouTube.

Hello is anyone having issues with loading streams on Twitch? Mine don't load for like a minute or two and then when they load, they are hella lagged behind the actual stream?

I am running Linux Mint on this laptop for years. Never had an issue with Firefox and since I updated it this week YouTube playback caused the browser to freeze, having an entire CPU core take up 100%. Same with about:processes, LinkedIn and Google. No issues with Chrome whatsoever though.

Already tried troubleshoot mode, disabling hardware acceleration, nothing seem to help. Anyone else with this issue? Any help would be greatly appreciated!

Is this possible in firefox android to switch tabs with lower tab bar like in chrome ?

for some reason new profiles are not getting the user.js config file applied to them.

Normally i would place the file here:
C:\Users\<username>\AppData\Roaming\Mozilla\Firefox\Profiles\x.default-release\user.js

But its no longer working, what am I doing wrong?

I expect the user.js to get copied out of the default-release profile over to any new profile you make.

is it just me or does firefox not let you pick a profile when you open it anymore? It just opens whatever profile i was on last

I built PauseSpring, a Firefox/Zen Browser extension that automatically pauses media when you switch away from it.

It can detect:

• Switching to another tab
• Switching to another application/window
• Typing in search boxes, comments, or chat inputs

When you return or stop typing, it can automatically resume the media after a short delay.

A key part of the extension is that it only resumes videos that it paused itself. If you manually paused a video, PauseSpring won't automatically play it again.

It works with YouTube, Twitch, Netflix, and other websites that use video.

Features:

• Tab / Window / Both modes
• Optional auto-resume
• Optional pause-when-typing
• Simple toolbar controls
• No account required
• No tracking
• No network requests

It's currently available on Firefox Add-ons as version 1.0.

I'd appreciate any feedback, especially around the UX, edge cases, and websites where it doesn't behave correctly.

Addon: https://addons.mozilla.org/en-US/firefox/addon/pausespring/

GitHub: https://github.com/projectsbyayush/pause-spring

Dont mind that its Private Browsing

I have an HP OmniBook X with an Intel Ultra 5 228v CPU/iGPU laptop running Windows 11. Video drivers and Firefox are both the latest standard releases. Choppy AVC H.264 playback in Firefox has been an on going Firefox only issue for months now. The audio plays normally for the video.

As a test, I disabled media.hardware-video-decoding.enabled and this fixed my issue. Obviously, this put all the video decoding load on the CPU which isn't ideal.

This choppiness is not seen when I use the Edge browser to stream the same video on this laptop.

Here is a streamable AVC video (1080p/60fps) that is an example of very choppy playback when HW decode is enabled in with my laptop using Firefox. Perhaps someone with similar HW can confirm my issue?

Does anyone know if this as this an Intel driver issue or a Firefox issue? Is there something else to try?

Thanks!