Keepr Notes — タイムスタンプ付き動画メモ

YouTubeでタイムスタンプ付きのメモを取れます。100%ローカル動作で、メモはあなたのディスクに保存され、拡張機能の更新が止まっても残り続けます。

Keepr Notes turns YouTube into your personal study and research workspace. Capture the exact second with one click, then jump right back to it whenever you want. No account. No cloud. No catch. WHY KEEPR IS DIFFERENT Your notes live on YOUR disk, not on a server that can shut down tomorrow. Too many note tools have vanished and taken thousands of users' notes with them. Keepr is local-first by design: everything is stored on your own machine with chrome.storage.local. We ask for the bare minimum permissions, so there is nothing to leak and no login wall to fight. HOW IT WORKS - Hit the button in the player or press Alt+N to capture a note at the exact timestamp. - Click any note and the video instantly jumps to that moment. - Manage everything from a clean side panel: edit, search, and delete notes per video. - Browse your whole library of annotated videos in one place. - Export to Markdown with clickable timestamps, ready for Notion, Obsidian, or any editor. - Backup and restore everything as a single JSON file. Your data, your move. BUILT TO LAST YouTube redesigns its layout often, and many note extensions break the next day. Keepr is engineered to survive: it uses a MutationObserver, selectors with fallbacks, and single-page-navigation handling so the button keeps showing up where you need it. PERFECT FOR - Students: timestamp lectures and tutorials, then export clean study notes for revision. - Language learners: mark tricky phrases, loop back to pronunciation, and build a phrase log. - Researchers: cite exact moments in interviews and talks with clickable references. - Podcast and long-form fans: bookmark the best ideas in 2-hour episodes and find them in seconds. PRIVACY YOU CAN ACTUALLY TRUST No tracking. No analytics harvesting your habits. No mandatory sign-up. Keepr never uploads your notes anywhere. If you ever uninstall, you can take a full JSON backup with you first. FREE — DONATIONS WELCOME Keepr is free. Every feature works without a paywall, a pro tier, or a subscription. If it earns a spot in your routine, you can leave an optional tip on Ko-fi or PayPal — donations are voluntary and never gate a feature. Stop losing the best moments of every video. Install Keepr Notes and start building a library of knowledge that is truly yours.