How do you set up firefox so if you hover over a word it will show the Spanish version in tooltip? ?

Question

It would be so appreciated if you could help me in any way. I've been trying to figure out how I did it before I updated Firefox. Thank you!

Answer 1

That sounds like it might have been an Add-On, not Firefox itself.  I've never heard of such a capability in Firefox, and I've been using it since it came out of Netscape.

Hope that helps.