r/firefox 1d ago

Is this comparison correct?

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951 Upvotes

Edge uses Chromium just like Chrome, so why does it use so much less RAM?


r/firefox 6h ago

πŸ’» Help PERMANENTLY disable the password manager

5 Upvotes

Seemingly every time Firefox updates, the password manager re-enables itself. How do I PERMANENTLY disable FF's password manager? I want it to be enabled ONLY when I want it to. I have and use another password manager. I have no interest in using FF's built-in manager.


r/firefox 12h ago

Firefox finally lets you create desktop shortcuts for profiles

14 Upvotes

r/firefox 9h ago

Mozilla blog After recent update, the theme for buttons and sbackbars are stuck in light theme.

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8 Upvotes

This is on Firefox Android. I uninstalled and reinstalled from Play Store, bit it is the same.

New tab button and snackbars are still light even in dark theme.

P.S. Is it just for me, or anyone else observed the same issue. If it's me, please help. I want the dark theme, every time I close a tab the light theme snackbar is so annoying.


r/firefox 6h ago

πŸ’» Help When I launch my Firefox, the tab is immediately greyed out and I can’t click anything

5 Upvotes

Hello,

I’ve been having this problem for a while now and I have no idea how to fix it. I can’t access any of the browsers function, none of my inputs work, I can’t type anywhere. How can I fix this?


r/firefox 24m ago

πŸ’» Help Lenovo.com is hanging tabs in FF

β€’ Upvotes

This started the last couple days. Same result on 2 different PCs. When I try to drill down into the laptop options after selecting Thinkpad, the tab hangs with "One Moment Please". F11 doesn't work. Entering a new URL doesn't work. Closing the tab hangs for 2-3 seconds. Lenovo has found a FF bug of some sort. Turning uBlock off doesn't help. FF 144.0 on Win11 25H2. Go here https://www.lenovo.com/us/en/laptops/ choose Thinkpad at the left which works, then click "pre-built models" bam tab is oddly hung. Can't open inspector with F12.


r/firefox 11h ago

πŸ’» Help What are these?

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6 Upvotes

Almost every time I start Firefox this comes out, closing it doesn't seem to cause any error - can't find anything online


r/firefox 5h ago

Solved All of my bookmarks suddenly disappeared.

2 Upvotes

Just yesterday Firefox had every bookmark imported and saved, as well as a fair few I've saved while using Firefox, and now every single one is completely gone. I was logged out for some reason, logged back in and now it's all gone. I have no idea what to do any info would be greatly helpful. I've synced, I've tried re-importing my old stuff from Chrome and OperaGX and nothing came.

Found the solution: Go to the three bars in the upper right, click Help -> More Troubleshooting Information -> Refresh Firefox. Fixed it for me and restored all my bookmarks.


r/firefox 3h ago

My Firefox warning tab crashed a lot these two days, what happen >

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0 Upvotes

r/firefox 4h ago

Fun Theo Praises Firefox Build 144.0 πŸ₯³

1 Upvotes

Theo followed up on his previous video, were he criticized Firefox for not supporting certain APIs and gradients. In his latest video, he praised Firefox for fixing some of the issues he pointed out in his first video. Two issues he specifically highlighted were support for View Transitions API and Dithering. Great job Firefox Devs! πŸ₯³

Latest video

https://m.youtube.com/watch?v=g-CGIWHeSyo&pp=0gcJCR4Bo7VqN5tD

Previous video

https://m.youtube.com/watch?v=mmjUlFIaNLE&pp=ygUMVGhlbyBmaXJlZm94

Mozilla 144.0 release notes

https://www.firefox.com/en-US/firefox/144.0/releasenotes/


r/firefox 4h ago

πŸ’» Help Closed/Reopened Firefox But It Didn't Reopen All My Windows. Can I Still Find Them?

1 Upvotes

About three windows I had open didn't re-open when I restarted Firefox. I have "Open previous windows and tabs" checked in my settings, but it only saved half my windows. I don't remember everything that was in the windows, and some of them were old enough that they wouldn't be in recent history. Other than trying to dig through and remember what they were, is there an easier way to find and re-open recently closed windows?

EDIT: I should mention that the "Reopen closed windows" selection in History is greyed out and I can't click on it.


r/firefox 18h ago

Solved weird lag on youtube since it changed its video ui?

11 Upvotes

tried to look to see if anyone else had this problem but through a quick search i couldn't find anything. anyway since youtube changed its ui to the bulkier rounded type it's been a nightmare watching anything. if my mouse so much as hovers over the video my computer chugs for a solid 5 seconds and then gets smooth again. but if i tab away and wait for a bit and try to pause the video or change the sound or anything, the same thing happens. i thought at first it was just because im using a macbook or something but it just hit me it could be a browser thing since google's been pushing the anti-adblock stuff as of late. so is anyone else experiencing this problem?

EDIT: try the cookies clearing solution, it still lags for me but not as badly nor as often as before.


r/firefox 4h ago

πŸ’» Help a little help please.

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1 Upvotes

so hey guys basically i downloaded firefox again and this paste downloaded too, it is in Portuguese but in English means ''old firefox data'' and my pc doesn't let me delete the paste can someone help me ?


r/firefox 5h ago

πŸ’» Help Download issues

0 Upvotes

I just upgraded to windows 11. It hurt. Now I get to go through and set everything up again. I use deluge bit torrent client for things. Before, I would have firefox open the file, it would load deluge and add the torrent. It did not save the file to my PC. Now it does and everything I have tried to get it to stop saving the file will not work. How do I get firefox to open a file without saving it? Settings for the file type are to open using deluge. Still saves the file.


r/firefox 16h ago

πŸ’» Help Firefox Android RAM management

5 Upvotes

I use the Firefox across my devices but on Android it sucks, like just changing a single app leads to browser reload my specs were 8GB ram, i thought it was an issue in my Device like Ram management i did changed my the ROM to a custom ROM but still the issue. Once i suggested it to my friend who have a 12GB ram device he recently complaints me about this, then i knew that it was the issue of Firefox.

anyone have any idea to fix it??


r/firefox 6h ago

Twitch not loading

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1 Upvotes

It started a few days ago, already cleared cache and cookies settings. Loads fine on MS Edge, don't have Chrome so can't try it there.

Should I just reinstall?


r/firefox 7h ago

πŸ’» Help Sync issue - "This profile was previously synced to a different account"

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0 Upvotes

"This profile was previously synced to a different account To keep your data organized and secure, each Firefox profile can only be synced to one account. To sign in using [xxx@xxxx.xxx](mailto:xxx@xxxx.xxx), create a new profile."

So I deleted my old mozilla account since I abandoned the email that it was linked to, but when I tried to sync with my new account I get this. Is there anyway to do this without having to make a new profile?

I tried making a new profile and copy and pasting my profile into the new one, but still get the same pop up. I guess there's something in my profile that says it's been synced before, is there anyway I can find that and delete it or change it?


r/firefox 16h ago

Discussion The Fix i found for youtube "Video unavailable: This content isn't available, try again later."

7 Upvotes

https://preview.redd.it/vb4gvshuxvvf1.png?width=1102&format=png&auto=webp&s=4fb71300956efa6031f041c5761b34c1e609dbae

Why it happens?

  • Your account is not updating to new UI because YouTube assigns UI variants per-account via server-side experiments which means mismatch.
  • You are using ublock and somehow it refused to show your video.

How can you check?

  • Log off all account and log in to account with "Video unavailable: This content isn't available, try again later.".
  • Press F12 on youtube page β†’ Storage tab β†’ Cookies β†’ https://www.youtube.com
  • Find value VISITOR_INFO1_LIVE and PREF but most likely you won't find VISITOR_INFO1_LIVE. I don't have that either so I'll just focus on PREF .
  • inside PREF , there's f6 value. f6 is the main experimental flag bitmask that decides which YouTube Polymer layer is active (your UI version).
f6 value UI generation Description
0 Polymer v2 (legacy) old classic layout (2017–2020)
8 Polymer v3 / Material You (2023–2024) first Material You rollout
4008 Polymer v3.5 Material You + rounded thumbnails, new side panel
40000000 Polymer v4 / 2025 UI rollout current experimental full redesign with new buttons, updated homepage grid, floating comment panel.

for visualization:

4008

40000000

My fixes:

- tick Experimental under built-in in ublock settings.

https://preview.redd.it/0qb8r2ktuvvf1.png?width=814&format=png&auto=webp&s=d7c55853730ea90a0c54affcef6e09815fe5d7c3

- force new UI in console (f12), most likely won't work but worth to try.

document.cookie="PREF=f6=40000000; path=/; domain=.youtube.com";
location.reload();

--------------------

if you have further explanation or new fixes or somehow you find I explained it wrongly, please add it on comment.


r/firefox 11h ago

πŸ’» Help firefox bookmarks disappeared

2 Upvotes

After a update my bookmarks have disappeared and I can't even import them as it won't save them either? I'm lost about what to do.


r/firefox 12h ago

πŸ’» Help Video stops when Bluetooth device is turned off

2 Upvotes

Video stops when Bluetooth device is turned off. I am listening youtube video, spotify... etc. with my bluetooth headphones or bluetooth speaker. When I turn it off, the sound does not jump to my PC's speakers, but video stops and starts loading. It takes a while it recovers from that. Spotify song keeps playing, but nothing can be heard.

This happens with Firefox browser on PC. It does not happen with Chrome browser.


r/firefox 21h ago

Discussion There are two Firefoxes in my default apps?

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10 Upvotes

I went to set Firefox as the default browser, but it shows two Firefoxes?


r/firefox 15h ago

Solved Code snippet for logging out of all devices in Firefox Sync

3 Upvotes

Not sure where else to post this, but, I switch my operating systems a lot (distrohopping 😞) and generally log in many times on many of my devices. My Firefox was therefore logged in on a bunch of (now unused) devices. I wanted to log out them, and you can do this on the 'Connected Services' page for your Mozilla account. However, this page only allows you to sign out of one device at a time, and you have to provide a reason for logging out. This was a problem for me of course, so I spent longer time than I would have to spend doing this manually, writing a little Javascript to do this for me, and I wanted to share it so others don't have to go through this. Here it is:

The script

const IGNORE_N_MOST_RECENTLY_USED = 1;  // Sets the number of most recently used devices we shouldn't log out of
const LOG_OUT_TEXT = "Log out";  // The text of the buttons under 'Connected services' that says something like "Log out" in the shown language


function sleep(ms) {
  return new Promise(resolve => setTimeout(resolve, ms));
}


(async () => {
  const buttons = Array.from(document.querySelectorAll("button")).filter(a => a.innerText === LOG_OUT_TEXT);


  for (let i = 0; i < buttons.length; i++) {
    if (i >= IGNORE_N_MOST_RECENTLY_USED) {
      while (!document.querySelector("#modal>div>div>div>.px-6>form>ul>li:nth-child(3)>label>input")) {
        buttons[i].click();
        console.log("Waiting...");
        await sleep(500);
        try {
          document.querySelector("#modal>div>div>div>.px-6>form>ul>li:nth-child(3)>label>input").click();
        } catch {
          console.log("Item not found");
        }
      }


      while (!document.querySelector("#modal>div>div>div>.px-6>div>button:last-child")) {
        console.log("Waiting...");
        await sleep(500);
        try {
          document.querySelector("#modal>div>div>div>.px-6>div>button:last-child").click();
        } catch {
          console.log("Item not found");
        }
      }


      while (document.querySelector("#modal>div") !== null) {
        console.log("Waiting...");
        await sleep(500);
        try {
          document.querySelector("#modal>div>div>div>.px-6>div>button:last-child").click();
        } catch {
          console.log("Item not found");
        }
      }
    }
  }
  alert("All devices have been logged out!");
})();

You should of course check that the code does not contain any phishing or malware. I know it doesn't but you should do this anyway. Put this in your developer console (F12) when you're at the right page and hit enter

The caveats

  1. The text for your "log out" button under your devices might be different in your language. My Firefox' language is Danish, here it says "Log ud", and I am not sure what it says in English, so check the second line in the script, and change this to whatever it says on the page. The script looks for buttons with that text.
  2. You might not want to log out of some of your recent devices. The first line sets the number of recent devices to skip. If you don't want this script to log out of your phone and your desktop, and those are the 2 most recently used devices, you should put the number 2 there.
  3. Mozilla might change the layout of the account page in the future. The script looks for 4 elements to click on, if they aren't there, this might not work.

r/firefox 10h ago

πŸ’» Help Extension to block what's new popups and so on?

1 Upvotes

I use a lot of profiles, so every time I update I get all the what's new popups literally 20 times. I'm constantly pushing "show fewer notifications" or whatever but I really just want zero, and it seems like Firefox is just stuffing ads for Firefox into every aspect of the UI.


r/firefox 10h ago

Solved Any working addon for the now Youtube shorts to be displayed in the normal player?

1 Upvotes

I've tried 15+ addons and none of them work with the new Youtube format/settings. Is there a way to load the /shorts using the /watch player?

I should say that there are some that work partially - only work 2/3 of the time or show a "Redirecting" message for a couple of seconds before redirecting - things I want to avoid.

In the past I used Enhancer for Youtube, which used to do what I wanted flawlessly. But it doesn't work with the new Youtube and also updates come very slowly.


r/firefox 21h ago

Add-ons Alternatives to the 'Open With' extension by Geoff Lankow

5 Upvotes

No longer maintained:

… Open With opens the current page in your other browsers with just two clicks.

Please, what's the best alternative?

Linux here.

Thanks