17 year old Firefox feature request fixed
Glad they finally add this. Used to be a painful lack compared to chromium-based browsers. During the long wait I've found this amazing addon called HighlightAll [1], which allows you to search multiple keywords and highlight them with different colors; the position will also be labelled on the scroll bar. Super helpful for researching/consuming long articles.[1]: http://jgoudey.free.fr/highlightall/