As I've been developing browser extensions for the past 6 years, your extension would be very easy and simple to implement.
I will just need you to send me your website API which is going to receive the parsed data from my extension and I will be on my way to deliver your extension
I guarantee you excellent code quality with clear comments and elaborate documentation to describe how it works and how you can extend the extension if you'd like.
Best regards,
Daroosh