TempoKeeper

Save video timestamps as bookmarks — never lose your place again.

TempoKeeper is the ultimate video timestamp manager and notebook for Chrome. Bookmark precise moments, save video segments (clips), view visual markers directly on video progress bars, and take quick floating notes without interrupting your viewing experience. Whether studying online courses, conducting research, analyzing sports, or cataloging favorite moments, TempoKeeper ensures you never lose a key video segment again. KEY FEATURES - One-Click & Keyboard Quick-Save: Press Alt+Shift+S (⌥⇧S on Mac) on any video to bookmark the current timestamp instantly. - In-Page Quick Note HUD: Press Alt+Shift+N (⌥⇧N on Mac) to summon a floating, glassmorphism note dialog. Type notes and hit Enter without leaving full-screen or switching tabs. - Interactive Seekbar Pins: Displays visual bookmark markers directly on video progress bars across YouTube, Bilibili, Twitch, and HTML5 video sites. Hover to view note tooltips; click to jump directly to that point. - Precise Video Clips: Set start and end times to save exact video intervals with automatic loop or stop watchers. - Sequential Playlists: Combine segments from any video across different platforms into continuous playback queues. Export playlists as standalone files to share with others. - Rich Export Options: Copy bookmarks formatted as YouTube/Bilibili video description chapters (00:00 Intro, 01:23 Title - Note) or export structured Markdown timeline notes for Notion, Obsidian, and GitHub. - Cloud Backup & Sync: Back up and synchronize your bookmarks across multiple computers through a GitHub secret gist on your own account (unlisted, but readable by anyone who has its URL). Hidden items are left out while your vault is locked; a sync made while it is unlocked includes them. - Local Vault Security: Optional master password with PBKDF2-SHA256 and AES-GCM at-rest encryption for private bookmarks and hidden folders. HOW TO USE IT 1. Open any video on YouTube, Bilibili, Twitch, or supported websites. 2. Press Alt+Shift+S to save the timestamp immediately, or Alt+Shift+N to add a quick note. 3. Open the TempoKeeper icon to adjust folders, set clip end times, or browse existing bookmarks. 4. Click Open Bookmark Manager to search, organize, create playlists, or sync to GitHub Gist.