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How do I disable the auto-updating of the Top Sites in Safari? I don't want to turn the feature off altogether, I just want to prevent auto-update. I know this may seem like an attempt to defeat the purpose of Top Sites in the first place, but I find that if it auto-updates any of the Top Sites that are forum-based, all of the unread topics are marked as read. So, an even better solution would be the ability to exclude the auto-update of certain URLs/domains, etc. Does that functionality exist?

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I don't know of any method of making it selective. There is a method for turning it off altogether, and this is chiefly used by people that don't want to have disk space taken up by the huge Top Sites image cache. – user9290 Aug 28 '12 at 17:16

I found this somwhere else which may solve your problem:

  • Quit Safari

  • Open Terminal (Applications/Utilities) & paste:

    defaults write DebugSnapshotsUpdatePolicy -int 2

    then hit return & quit Terminal.

To reactivate:

defaults delete DebugSnapshotsUpdatePolicy
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To disable TopSites, quit Safari, open Terminal and type or paste:

defaults write DebugSafari4IncludeTopSites false

Press Return key. Relaunch Safari.

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If you use Safari's Private Browsing mode, Top Sites will not update at all. However, this solution might not completely address your original question - I haven't found any solution that could turn-off auto-updates of Top Sites, either completely or selectively for certain URLs/domains.

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