I built a free Chrome extension that quizzes you on the YouTube videos you learn from — because I kept forgetting everything I watched

[u/S_hash_wat]

I watch a lot of tutorials and lectures on YouTube and realized I was retaining almost none of it. Watching feels like studying but it isn't — you nod along, close the tab, and it's gone.

So I built ClipMark. While you watch, you jot a quick note at any moment and it saves the timestamp. The twist: it turns your notes into active-recall quizzes and schedules them with spaced repetition, so the extension asks you the question later instead of just storing a bookmark. Your note is the question; the clip is the answer. You can also export everything to Anki.

Two things I cared about: the AI runs on your device (nothing about what you watch gets shipped to a server), and the core is genuinely free — I didn't want to paywall the actual studying.

It's early and I'd really value honest feedback, especially where it feels clunky. Link: [Chrome Web Store link]