I see the following extensions shown:
Tudou
Youku
Tencent Weibo
Sina Weibo
They appear to copyright, by Apple in 2013. Are they need? Can they be removed? And they seem to be version 1.0 and haven't been updated.
iPad Pro, iOS 10.1.1, Purchased from Verizon 128 GB
There are only necessary if you use them.
Go to your Safari menu bar, click Safari > Preferences then select the Extensions tab.
You can removed extensions from there.
Don't appear to be in safari.
No Safari Extensions are required for normal operation, and all of them can cause unexpected behavior. If you don't know what they are, remove them.
Here are some Apple Support documents you may find helpful:
Install and manage Safari extensions on your Mac - Apple Support.
How to use Internet plug-ins in Safari for Mac - Apple Support
Safari for Mac: If you need to remove a Safari plug-in
Safari - Official Apple Support
Never install something without first knowing what it is, what it does, how it works, and how to get rid of it when you don’t want it any more. Think before you click.
FWIW, the extensions you mention are for the share menu and have nothing to do with Safari per se. They are normally disabled. I guess you could remove them but I see no reason to.
Strange Extensions In Sierra, do need them can they be removed?
