Hey HN!
I created a solo-product recently that helps people comprehend information on the web better. Sometimes when we're reading, we don't actively read. By embedding questions within the text, pebble improves active reading. There are also a ton of other feature such as PDF support, web highlighting, spaced repetition quizzes, questions for YouTube videos, AI wikipedia pages and more!
Feel free to check it out and hope it's useful :)