How to paste text in the browser through the context menu?

Question

Google Chrome

Hello! The task is this: to add items to the context menu, when clicked, text will be inserted into the form.
Those. there is a regular registration form and instead of manually copying or typing in, for example, email, I just call the context menu, click on the email item and it is inserted.
For chrome, there is an extension - Script Menu, which allows you to add your own scripts to the context menu, but I didn’t think of how to implement a simple text insertion.
Any ideas?

Answer 1

Set Autofill settings

Answer 2

Autofill does not work on all sites. Therein lies the problem.