ClipMark
YouTube notes and flashcards that quiz you back
ClipMark turns long YouTube videos into searchable, revisable knowledge. Bookmark a moment with one click, and it shows up as a diamond marker right on the video's seek bar — hover for the timestamp, description, and tags.
Revisit Mode plays only your bookmarked segments back to back, so a 2-hour lecture becomes a 6-minute review. Active Recall turns those same bookmarks into spaced-repetition flashcards: it prompts you to recall what happens next before revealing the clip, and schedules re-tests on a 1/3/7-day cadence.
Everything lives in a dashboard with search, tag-based auto-groups, and an activity heatmap, plus a persistent side panel for quick access while you watch. Pro adds AI auto-descriptions and summaries from the live transcript, and one-click social captions for sharing a clip.
What you get
- One-click bookmarking with always-visible markers on the seek bar
- Revisit Mode: play only your saved clips back to back
- Active Recall: spaced-repetition flashcards from your own bookmarks
- Reminders on any cadence — daily, weekly, monthly
- Dashboard with search, tag-based groups, and an activity heatmap
- Share a video's bookmarks as a public link or embeddable widget
