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When looking at OS X Activity Monitor under the "Real Mem" column, I frequently find a process called "Safari Web Content" using 1gig+ of memory. I understand that this happens when I open a lot of tabs. However, even after I close essentially all the tabs, I find it is still very high. I have to restart Safari to bring it back down to reasonable levels. Is there a way to make Safari release this memory while leaving Safari open?

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Have you tried disabling or removing all 3rd party browser extensions? – Ƭᴇcʜιᴇ007 Jul 13 '13 at 17:13
According to, it might be caused by Flash or it might just be an instance of "free memory is wasted memory". – user495470 Jul 14 '13 at 2:35
Look on StackExchange for many discussions of this problem. What it boils down to is waiting for an Apple memory-management fix, and using one of the memory freer little menubar apps, or the purge command if preferred. The Click-To-Flash Safari extension can help, but after a lot of reading, people just manually release inactive RAM as needed. Turning off Safari's cache and DNS prefetching have helped some people. – Zo219 Jul 23 '13 at 20:25

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