Korwin wrote:
> That is, with the help of some kind of add-on or script, perform what has long been done in the Google Chrome browser.
You can either use Google Translate yourself, or install an add-on that
uses it on your behalf, I don't use an addon, but you could look at e.g.
<
https://addons.mozilla.org/en-GB/firefox/addon/to-google-translate/>