Linux box would be a good choice. I used to admin WinDoze networks and finally gave up and ran Macs instead,
but a Linux box was on my personal list as well.
Forget Google translate ... I think we all need to consider Navajo Code Talking
OH
forgot to mention
https://tineye.com/it is a reverse image search engine which can track down an image to other sources,
so it may be a way for you to backcheck / cross check if your "cleansing" is effective.
Recall though that places like google will warehouse their stuff for a while
so you may not be able to make a totally clean sweep "immediately." Eventullly though it will phase out.
Generally uploading the image works better than a url, especially if the image is embedded in a private forum such as ours,
or added as an attachment instead of a hot link.
Glad the other links helped
Cheers