SelectorsHub supports almost all the websites and mostly all kinds of web elements.
There are certain websites and web elements where not just SelectorsHub, most of the browser extensions won’t work because of standard W3C rules.
Here is the list of such websites
1- Browser Store from where you have install the plugin.
For Ex- https://chrome.google.com/webstore/detail/selectorshub/ndgimibanhlabgdgjcpbbndiehljcpfh/
2- Default new tab in browser without any url in the address.
3- Privileged browser windows/tabs such as “chrome://extensions”.
4- Closed Shadow root or Closed Shadow DOM.
5- Canvas Elements.
Checkout the below tutorial to learn about these concepts with real time example.