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 3 days 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 3 points 3 days ago

from my experience things like this generally don't work to well. The problem is that once its at 100% the sytem is bogged down so it won't actually kill it till the tab has calmed down and you can interact yourself again. Granted it might still get it before it spikes again so im not saying its without merit. Just warning to temper expectaions if you do find something like that.