Month: September 2017

Time Machine is a great tool for backing up your system, but sometimes it can be very slow, in fact by default Time Machine prevents itself from using to much of your processing power. You can turn this off by opening Terminal in /Applications/Utilities and running:

sudo sysctl debug.lowpri_throttle_enabled=0

This will prevent Time Machine from throttling itself. To turn on the throttling again, just run the same command with 1 instead of 0, like this:

sudo sysctl debug.lowpri_throttle_enabled=1

First you have to disable thumbnail refreshment, to do that, open Terminal in /Applications/Utilities/ and run:

defaults write com.apple.Safari DebugSnapshotsUpdatePolicy -int 2

Then, go to ~/Library/Caches/com.apple.Safari/Webpage Previews.

If the user Library folder is hidden, you can access it by pressing Command + Shift + G (⌘⌃G) in Finder, pasting the path in the text field and clicking “Go”.

In that folder you will find jpeg files with 32 character names. Either edit those directly, or copy images to the folder and rename them to whatever the name the different websites’ thumbnails had.

Remember to keep a backup of the files, since they are stored in a cache folder which might be emptied by certain programs or upon installing a new system.