Is there any Magento 2 extension available for wechat share?
I searched on the internet to find possible solution on this, but didn't get what I want.
Instead of searching for wechat share integration you can use AddThis plugin. It will give you range of share buttons. They also worked on Wechat share, so after embed this you can see WeChat share too.
Note: We chat share will only appear on mobile browser, because it's a mobile APP, and you wont see it on desktop. But you can test it on browsers' mobile view.