Firefox Support Forum

I have noticed that if I leave an empty firefox tab open after sometime the empty tab somehow would start using a large amount of RAM. I don't know if it is expected behaviour or not. I came to know about this problem as I use a laptop and I very rarely put it to sleep, so my laptop would idle out on charging with a empty firefox tab open and it would start out with consuming reasonable amount of RAM but after I return mabye after 20 minutes and the RAM usage would skyrocket to about a gig for only firefox with that empty tab. I do have 4 add-ons installed but firefox behaves the same when I restart it in safe mode. Any help is very much appreciated.

I have more than 100 tabs and more than 1k open in the background (the tab is downloaded from the previous session, but not open). When opening / closing the FF tabs, it gradually uses up to 18-20GB. When this limit is reached, friezes begin, the tabs open slowly. Memory busy FF is released ~2GB, after that it starts to load pages. According to symptoms, it looks like a shortage of RAM. But I have 64GB RAM, reserve (Win) 17GB, free 15GB. And more is 9GB SWOP on SSD, 136GB of free space on SSD and 1TB+ free space on HDD (RAID0), 200+ MB / sec internet . Where and what to change to ff used accessible resources? After all, they exist!

Hello,

I like Firefox unfortunately all browsers are so 1999... It is impossible to use without addons, if you browser internet a lot and have opened a lot of tabs and windows. I bumped into this article: https://support.mozilla.org/en-US/questions/1155401 Saying: this will open another instance of Firefox. But nothing is bulletproof! So ask, if this will isolate me from addons, which I would open in first instance of Firefox.

Thanks for help.

Hi,

i have a problem with deleting a huge FireFox profile folder. After moving them into the recycle bin im not able to delete the folder properly. The size is about 79 GB and i would love to get rid of this huge file...

Unforetunately i cannot since i receive the follwoing messages:

Object "entries" in use "cache2" in use "nrbzc9xm.default-release-1600871876077" in use

Im really lost... Tried to delete in safe mode and after i uninstalled firefox. No chance!

Any advice?

Any help is appreciated.

Best from Germany,

Simon

Today I opened my Firefox and all my tabs are gone. I was able to find a backup in sessionstore-backups, but when I renamed it to "sessionstore.jsonlz4" and replaced the one in the main profile folder, opening Firefox still don't gave me any tabs, just the default "new tab".

Usually, when you close Mozilla Firefox or shut down your computer, you can restore the before closed bookmarks while you start again Mozilla Firefox. In my case, Mozilla Firefox automatically updated itself and I could not open again my bookmarks (the history was gone...). I had lots of pages that I still wanted to read and am looking for a way to find them back...

I have many tabs like 200-300. Firefox crashed today. I also have 4GB page file on top of that. Strange! After I restarted Firefox it was using only 6.8GB RAM. Perhaps memory leak. BTW if I have browser.cache.disk.enable set to false. Is page file still used?

Thanks for help.

I never delete history! But I noticed this since long time ago, e.g. I want to go on a website - I was recently on (if I closed it already) but it is not in immediate search history - it happened to me multiple times!

Also now: I was searching for one keyword a lot, like 50 times and in history are barely like 7 hits. No idea why it is not there!!!

Please help.

I'm working on an addon to automate taking screenshots of lecture slides. I'm using a canvas object to capture and save the file blobs and JSZip to zip everything together and download. But JSZip keeps throuhing the `unsupported file type` error. Even though blobs are supported.

Here's the relevant code I'm using Github File

I've submitted an issue to the maintainer which has some more debugging info. The script in the addon_context has some very quantum behaviour and changes output every time I console.log Github Issue

I'm wondering if there might be a problem on my end, with the way I'm generating and processing the blobs. The same code works in chromium based browser, I'm confused as to what Firefox does differently. Any help would be appreciated.

After a Firefox version upgrade, my URL bar search shortcut for Russian Wikipedia has begun to fail. Say, if i search for Диснейленд (Disneyland in English), wikipedia reports that the page does not exist, showing the error message like in the attached screenshot. I've tried recreating the search shortcut, but to no avail, it still shows the error. How do i fix the situation?

Called Wells Fargo and they told me to disable all password managers in order to log in!! WHAT???? I can get to my account using Edge WITHOUT LastPass, but something in 87 is wonky. Spouse has Firefox 86 with LastPass and he can get on with no trouble. Have started a trouble ticket with LastPass and will be contacting Wells Fargo tech support for their input. Please fix!!!!!

'bold text'Problem with appearance of aplusnet email on my iMac running macOS Big Sur 11.2.3.

For no apparent reason, everything in the Firefox window displaying this email application appears about one-fifth or less of normal size. (See attached screen shot.) Everything, meaning text fonts, graphics, etc. No other Firefox window or tab similarly affected. I tried restarting the application. And then restarting the computer, then Firefox, then the aplusnet email. No soap. Not responsive to changing the font size.

No idea how this happened, but it’s rendered the email unreadable on Firefox. I'm running Firefox Browser 87.0. Thanks very much for your help.

FF 87.0 Win10

Tried with about:config and that didn't work. Tried disabling in General - Browsing.

The videos I watch do not have a settings option.

How do I disable this bloody annoyance?

Thank you.

When updating my password on certain websites, Firefox does not offer the option to generate a secure password. Is there anyway to force Firefox to create one anyway?

Is it a problem with the coding of the website? If so what?

I have Firefox multi containers added to two Windows 10 laptops. Everything except multi containers is syncing. The last laptop I added after resetting that computer, updating Windows, and reinstalling Firefox. That last FF installation is showing the default containers. I use a lot of containers so would rather not set them up again. I have reinstalled FF a couple of times on the latest computer but didn't solve it. Suggestions please?

When I click shift and right click always a context menu comes up and I would like to deactivate that. Concrete: I would like to draw arrows on a chessboard (lichess.org) with shift and rightclick, but then always a context menu comes up and distracts. This is very annoying and I would like to change that - though what I found so far wasn't that helpful for me.

Thank you very much in advance