To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!Close
Welcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.Close
Rated 4 out of 5 stars
It's great extension but can you please include permanent highlighting as it used to be in the Highlights extension - https://addons.mozilla.org/ru/firefox/addon/highlights/
It would be one of the best with this function