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New member
Status: In review

Firefox isn't with useful tool, which is tabs suspender, it saves of much hardware consume and doesn't allow your PC stay slowness and/or your own internet, because tabs can consume internet and recourses in background without you use it, so that's important and should be in all popular browsers including Firefox. I recommend they base on auto tab discard and possibly performance tool (by Microsoft Edge), because auto tab discard extension is really complete and very useful, mainly it saves where you stop on certain time video and performance tool saves much your recourses on your computer and is very efficient:

Screenshot 2022-05-13 222228.pngScreenshot 2022-05-13 222122.png


Strollin' around

I'd prefer a way to disable it per tab though. Sometimes I just need a tab to stay alive in the background

New member

Researchers who use Firefox need to be able to retrace Tabs and the history of each Tab.  If tabs automatically expired, it could cause a disaster.  If this suggestion were to be implemented, there should be an option to turn it off for those of us with plenty of memory and robust CPUs.  Placing the tabs in a sleep mode in the background is okay as long as the tabs and their history are easy to bring back.

Making moves

@EduardoBernal @Jon 

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Making moves

Stupid question:

Isn't this what was already deployed and is mentioned at:


If not, what's the diferences?

Strollin' around

Please can you add this soon!


Making moves

I used to use Microsoft Edge instead of Firefox for this reason. I think all browsers should have this feature.

Not applicable
New member

Lower memory usage

Could it be possible that open tabs do are not actively consuming memory on systems? I am in need to open extensive number of tabs on firefox (50+) for data mining and reference checking, and find my system utilizing on average 6Gb of ram or more, and this slows down anything else I am doing on my computer, could it be possible that tabs that are inactive are not loading the system's ram?

Community Manager
Community Manager

(Note: a similar idea has been merged into this thread)

New member

I think the best way around this is if firefox automatically suspended tabs after a certain time threshold eg: 6hrs/ 24hrs

Strollin' around

Truly a needed feature!

New member


I use firefox since the beginning but I have a concern about memory management since a long time and nothing change about that .

Firefox use a lot of memory , we all know that but its not my main concern

I open a lot of pages ( around 20 permanently ) and every time my computer and firefox slow down after a while . When I check memory usage with system explorer freeware it always show that after a while , some pages use more and more memory ( several gigabytes sometimes  per page ) and I have to close the page to resolve the issue )

I tried the same pages with OPERA ( the crypto version , I don't know if it's the same than the regular opera regarding memory management ) and opera does something very simple ( clever ) that I think it might be interesting to add in firefox  : when the page starts to use more and more memory , the page crashes and it didn't affect the other pages or Windows. You just have to refresh the page when you use it. It's very more convenient , avoid the computer to slow down.



Making moves

Add setting to automatically freeze unused tabs after some time (RAM)

Using Firefox, even in 32-bits on 8 GB of RAM, when i'm running game and some other app, is unusable at this moment, when i try to browse the Internet using your browser, my ram is being overloaded, because Mozilla eats about 2 GB of RAM for about 1 hours of unusing this browser. Of course i can clean up and freeze tabs using about:// flag, but i want to see setting which i can set automatically freeze all tabs, not only selected by Firefox, all tabs, so after using this setting, from 2 GB of RAM, Firefox would eat only 250-300 MB in idle process at once after for example 1 minute or 10 seconds.

Making moves

@Joncan you, please, clarify me what's the difference between this idea and the Tab Unloading feature already deployed in FF93 ( ) ?

Because i'm not getting it...

Thank you

Not applicable

@Maverick74 If there really is a review going on, developers should have mentioned it. In my environment, it was not working because browser.tabs.unloadOnLowMemory was set to false by default.