Hi there,

You rated 1 star because you found my share button, which can share on these websites: Facebook, QQ, Weibo, and WhatsApp.

The code you share is just the share button you see in the context menu.
The Zoom browser extension is 100% free and Open-Source. You can browse my code on this official GitHub page:
https://github.com/stefanvd/Browser-Extensions/tree/master/Zoom/Zoom-browser-extension/src

If you have any questions or still need any help, you can contact me on this support form: https://www.stefanvd.net/support

Thanks