Firefox 社群討論區

I would like to be able to download YouTube videos.

Is there a Firefox add-on that will allow me to download YouTube videos onto my MacMini?

I tried Video DownloadHelper and YouTube Video Downloader and didn't see any action.

Do I need to setup settings a certain way to make it work?

What are the steps to make it work?

Thank you for your assistance.

I want to copy/clone information in my Firefox Profile (Bookmarks, Logins, ..) from one device to another. Once that was accomplished, then I would enable Firefox Sync for the two devices.

Scenario: Device “A” (Profile A): Primary/Original/Source Device “B” (Profile B): Copy/Clone/Duplicate

I understand that if I set up Firefox Sync first and then sync the two devices what I will get is a combination/fusion of the information on the 2 devices, i.e., all the “good” stuff in Profile A plus all the superfluous stuff in Profile B that I would just as soon ignore/delete – which is not what I want. This issue has been raised in a number of other posts on this forum but with no suitable resolution offered (that I could find). I’m wondering if there might be a “work-around” that would achieve the desired result.

So ... would this work?

1) Back everything up first (of course!) 2) Glean any unique information to be preserved (Logins, etc.) from Profile B and incorporate it into Profile A (Profile A now has everything essential!) 3) Purge Profile B

   a) Create a New Profile on Device B (and delete old?)
   b) Delete everything possible from the new Profile B (default bookmarks, etc.)

4) Login to Mozilla account and enable Sync

The idea is to create a “blank” Profile on Device B so that when Profile A and Profile B are Synched together (combined), Profile A remains unchanged, and Profile B is populated with everything in Profile A (a perfect copy!). The result that I want after Sync is essentially A+B=A, the solution of which is of course B=0, hence the focus on creating a "blank" Profile B.

Instead of purging Profile B as above, an alternate method might be to first “pre-load” Bookmarks in Profile B by the usual method of Backing up Profile A Bookmarks and then Restoring them to Profile B. At this point Profile A and Profile B Bookmarks would be exactly the same and Synching the two devices should make no changes to either’s Bookmarks. Logins and other information would still have to be purged, but this could at least be a head start.

Presumably this idea could be extended to more than 2 devices (but with only one being the “Primary”).

Note that I am (myself) only concerned about Bookmarks and Logins, and am thus glossing-over how other information that might be important to others (Browsing History, Tabs, etc.) might be Synched.

Could someone from Mozilla/Firefox with a knowledge of the inner workings of these features please comment as to the efficacy of this “work-around”?

Thanks.

I am going round in circles. The last Firefox update reset my Firefox on my laptop to default settings including losing my master password. I started to reset all my old settings but when I got to the part where I setup the sync with my phone version of Firefox, Mozilla asked me to log in. My password was not recognised so I hit "Forgot password" having set up a new password using one of my 10 digit authentication codes, I was then asked to log in with my new password, I did this & when trying to do the sync, I am being asked for a six digit authentication code! I have no idea where to find this code. Please help.

Yesterday, something went wrong in my Windows 11 desktop (I have a virus program installed). One of the casualties involved corrupting Firefox (it would not open). I reinstalled Firefox without removing the old version. Now I have a new installation but all my bookmarks and other data are missing. There is a folder on my desktop labelled as "Old Firefox data". It is possible to restore Firefox to a previous time (a day ago)? Thank you.

Need help finding my old bookmarks on my hard drive that might have been erased when I did a reset Windows 10 install. Unfortunately, I had to restore my hard drive, and the Windows 10 tech advisor didn't tell me to save my Firefox bookmarks before I started the restore process. But the bookmarks might still be somewhere on my computer? And I don't think I ever created a Firefox account. So I don't think Firefox saved them.

I have many, many bookmarks. Every once in a while I save them. My hard drive died. Geek Squad replaced it but where are my bookmarks and passwords? How do I recover them?

HELP!

Move open account to new computer, old computer died, Firefox[ Mozilla] have all my pass words also, Will not let me open old e mails etc. sync wants cell phone,it doesn't work where I live. thanks john

after reinstalling my system i culd not login to my account i have like 9 passwords and your stopid system blecked my attempts like after second attepmt so i did password recovery and changed it but after that all my sync data are gon WTF!!!!! It makes the sync function pointless and usless for its specially for that purpose !!!!!!!

Can someone help me recover my previous session. I restarted my computer, I force quit firefox before so I would restore. I restored and only one or two of the four pages I had open (with a bunch of tabs open in each).

I cant use the restore previous history tab cause its grey...

Please help.

Thank You.

Hi, I accidentally did a refresh on my Firefox (Win 11) and therefore I now have an "Old Firefox Data" folder on my desktop and Firefox is completely almost back to stock.

I have lost all extensions, customizations, settings and other configurations. Luckily, I had taken a backup of my bookmarks prior to doing this.

How do I return everything (including extensions) back to pre-refresh state?

Thank you.

Firefox was crashing so I found the folder in C:Program Files and renamed it before a new install. I downloaded the new Installer and installed Firefox again thinking all would be saved, but now, my bookmarks are missing and the history from the last few weeks are gone and started with the date I re-installed it. I have an old AT&T email that is now Yahoo and been using it for years. I tried to log in and I get a different screen asking about an ID which I don't have. Firefox always launched showing this icon to start yahoo as well as Chase Ect...ect and all are gone.

Is there a way to point to the old folder, after changing it back to original name and get back to previous version?

I did find another Mozilla file under Users,ComputerName,AppData, Local. I don't know if it was created with the new install or there before and just updated because I renamed the first file I found and now it's using C:Users to start Firefox. Any help getting back to where I was is appreciated.

Thank you

Tony