Good highlighter for Firefox. However, the note should be saved automatically with the popup close. Also, I think the switching between Highlight and Notes is needless and I would prefer having the Notes window under the Highlight.
There are issues with Midnight Lizard addon where the highlights are very dark and almost invisible at some webpages. But this issues cannot be avoided, I guess.

Removing the highlighted sentence is not working for me... How to remove a highlighted sentence?

Works like a charm with good UI. Unfortunately the higlights don't save if you refresh the page, which can be rather frustrating.

completely useless on dark mode. It lacks colors for dark mode. Hope it will get fixed soon.

Il s'agit d'un module "risqué" à utiliser. Comme toute note et surlignage disparaît complètement au rechargement de la page, le risque est trop grand de perdre son travail sans le prévoir. Ce genre de module ne peut être efficace que s'il garde en mémoire ce qui a été surligné.

Works perfectly for my needs, as I do not need the highlights to be searchable for future use.

I only WISH I was able to create my own personal keyboard shortcut. Thus my 1 point deduction.

Would be nice if it was in the right mouse click context drop down menu.

Wow, a truly useful extension that boosts productivity. One of those extensions I wish I would have thought of.

This addon is a nice start, but 90% of the needed functionality is missing. How do I access the list of all the highlights + notes I've made across the web over the years? That list should be easy to access, searchable, and filterable. Yet It doesn't seem to exist in any form. In fact these highlights + notes don't even persist across a page refresh. So the addon is a nice thought, but ultimately worthless.

has potential but it worked for me for a page and a half and then just started to not remember the highlights when I went back to them so I uninstalled :(

It's a lovely app, but I lose my highlights and notes whenever I refresh the page or close the browser. I wish it weren't so because it makes it a little useless for long term use; I still have to download the pages and highlight and note them with a PDF reader if I want to access that later in life. But otherwise a lovely and useful tool.

Exactly what I need it. Very useful for presentations!

Simple and great add-on. Helps me to highlight texts from web pages when I'm studying. It would be nice to personalize shorcuts.

Rudimentary, but it's absurd that we dont have better alternatives!

This extension has obviously been developed with love..

Simple and nice user interface. I wish the highlighted words were saved so that I don't have to highlight again when i revisit a page.