chrome extension. Can I send the content of the page to the server from the extension?

Question

Google Chrome

A narrow task (... do not delve into ...). It is required to take the page that I am viewing.. send it to the server, and depending on the content, give a certain result to the extension.... (processing data on the server, this is a must...)
Before starting to develop the extension and study (I am an experienced programmer, but did not deal with the development of extensions ...). I would like to know... who worked on browser extensions, is there such a possibility?

Answer 1

Thank you! So let's dive into learning!
...
the link has changed
https://github.com/toster-extension/toster-extension