When developing an extension for google chrome web browser we can create an icon that will be displayed within the URL address text box. We can create that icon to be displayed when the web page meets specific criteria. The criteria is in our full control.
The following video clip presents a simple extension that displays such icon (AKA Page Action) when the URL address of the rendered web page includes the string “abelski.com”.
You can find the source code as well as the detailed slides that explain this topic available for free download at www.abelski.com.