this post was submitted on 07 Jan 2026
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Firefox

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Plugin to automatically kill tabs that are stuck at 100% CPU usage (lemmy.ca)
submitted 4 weeks ago by phoenixz@lemmy.ca to c/firefox@lemmy.ml
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So I regularly see issues in Firefox where pages from certain websites (Hello amazon.ca!) shoot to 100% CPU utilization and just never stop.

I'm wondering, is there a plugin that could periodically check the FF process list and identify tabs that are misbehaving like this (or in other ways, extreme memory consumption, perhaps?) and perform configurable actions like "Reload page (GET only of course) on tab" or "Kill tab" ?

It would be helpful because I see this issue on a daily basis, regularly to the point where these tabs are causing problems.

I already have "Auto tab discard" that discards unused tabs, but I'd like this as an extra feature, or a separate plugin.

Anyone who knows what could be useful?

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[–] HubertManne@piefed.social 1 points 3 weeks ago

see thats the problem. once it has 100% if it don't let it go then anything setup to stop it can't function. You have to have reserve. I mean you could do 90% maybe even 99% but honestly the issue there is it shoots up so fast the stop does not get a chance to launch.