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0 pointsgravitas5y ago0 comments

Firefox has a suite of `about:` URLs[1], one of them is about:performance which will show you the Task Manager (their name) which has a sort of CPU and RAM column. It even shows you when it's javascript on a tab chewing up resources and not the extension.

[1] https://developer.mozilla.org/en-US/docs/Mozilla/Firefox/The...

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2 comments · 2 top-level

capitainenemo5y ago

I don't know if the situation has improved, but at least in past it seems about:performance has a problem picking out problems created by an addon doing a ton of DOM manipulation that chews up resources in the tab. Bisecting addons or my preference, a clean profile or safe mode, was usually what I suggested, but YMMV.

dblohm75y ago

about:about is the fastest way to look these up. :-)

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