Hi, Louise. Not sure whether I’ll have an answer, but some more information might help. For example, what kind of Mac (detailed information can be obtained either from knowing its basics and placing information about it from the third party “MacTracker” app, or from “Machine Profile” from your installed apps into another message to the group, along with information about what version of macOS is installed on your machine. However, the amounts of memory in use according to your screenshot are NOT really high unless it’s a relatively old machine.

I’m occasionally having a possibly similar problem on an almost new Mac laptop, In my case, it looks as though an individual website is consuming an enormous amount of memory when Safari is the active browser. You can get more information about that by using a utility installed by the operating system, Activity Monitor. However, my attempts to solve my own problem have led me to realize that Activity Monitor does not track memory dedicated to a particular website.

I’d also suggest you consider using a different Chromium-based browser. Google Chrome is widely regarded by people who know much more than I as weaponized by Google to acquire as much information about you as possible for its own monetary purposes. Depending on how old you computer is, you might look at other Chromium-based browsers that don’t have that scurrilous reputation.

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Jim Robertson