Kind of reminds of the days of Yahoo! Toolbar and friends. I think today we have several ways we can go about this. There are browser extensions that can be use

Kind of reminds of the days of Yahoo! Toolbar and friends. I think today we have several ways we can go about this. There are browser extensions that can be used to both complement and alter the behavior of a website. Extensions can interact with the OS and other apps on a system which offers a lot of potential for integrations and customization. (e.g., on iOS/macOS, Shortcuts allow integrations with 3rd party apps, AppleScript, PowerShell (on Windows), etc.)