YT SideNotes is a Chrome extension built for people who learn from YouTube. You watch a video, capture an insight, and it gets saved with a direct link back to the exact moment it came from. No switching apps, no losing your place. Every note lives locally in your browser with no account required.
YouTube has no built-in way to take notes while watching. Learners had to switch to another app mid-video, break their focus, and manually note the timestamp. The connection between the insight and the video moment was always lost.
The extension sits alongside the YouTube player and lets you capture notes without leaving the tab. Each note is automatically linked to the current video timestamp. Click any note later and the video jumps straight to that moment. Everything is stored locally in the browser so there is no account, no sync, and no privacy risk.
Ready to build something like this?