YouTube Timestamp Bookmarker

Save and organize timestamp bookmarks while watching YouTube videos.

YouTube Timestamp Bookmarker — save, organize, and share moments from any video. Add one-click bookmarks with notes, jump back instantly, and manage them in a slide-out sidebar. Export/import per-video JSON (with optional thumbnails), download in one tap, and re-import later on any device. Drag the floating pill where you want it, use F7/F8/F9 shortcuts, and keep everything synced locally—no accounts needed. Key features: One-click bookmarks with notes, start/end ranges, and thumbnails. Slide-out per-video sidebar plus draggable floating counter. Export/import per-video JSON (downloadable file; optional thumbnails). Keyboard: F7 sidebar, F8 hide/show, F9/Numpad0 bookmark & set ranges. Clear all per video, toast feedback, light/dark-aware UI.