Is it Safe to Delete Cache Folders in OS X?

| MGG Answers

Question:

Terri Writes: I’m looking for ways to improve sluggish performance on my computers.  I heard that emptying ~/Library/Caches/ can be helpful.  Is it safe to also delete the system-level /Library/Caches/ folder?

Answer:

Generally speaking, it is safe to delete anything in any “Cache” folder managed by OS X.  In your case, both the user level (~/Library/Caches/) and system level (/Library/Caches/) folders fit this description.  To minimize risk, however, make sure you quit all apps before trashing the folders and then reboot immediately afterwards.

Onyx

Onyx will automatically clean all your caches and more.

While it’s certainly fine to do this yourself, free apps like Onyx can do this (and more) for you automatically.

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Comments

An...

Move the cache folder to desktop screen and shut down, wait a little bit and turn back on the mac.  The new cache folder is automatically regenerated in the library.  works for a week and if nothing crash, you can move the cache to trash can.

I did it when I had problem using new Aperture because the Mac system was confused with old photo editor like iphoto.  Lots of people have problem to make Aperture works and this is the way to fix it.

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