Screenshot of a specific area of ​​a web page with an http pass and response. Is there one?

Question

Images

Friends, hello everyone.
Tell me if there is a plugin for the browser or in some other form a script that takes a screenshot of a separate area of ​​the screen, sends it to the url I need with certain parameters and returns the script-url response to which the image was sent.
I rummaged through fireshot (plugin) - it seems that there is such functionality, but how to send the image itself is not clear.

Answer 1

canvas can do that, I think
stackoverflow.com/questions/29972949/html2canvas-j...