TubeStack — YouTube Summarizer with Flashcards

YouTube summarizer that turns any video into flashcards. Summarize lectures, tutorials, & more — right inside YouTube's sidebar.

TubeStack is a YouTube summarizer that instantly reads any video's transcript and converts it into AI-generated flashcards — right inside YouTube's sidebar, without leaving the page. Unlike basic YouTube summary tools that give you a wall of bullet points, TubeStack gives you interactive, flippable study cards with timestamp links so you can jump back to any moment in the video. ────────────────────────────────────── HOW IT WORKS ────────────────────────────────────── 1. Open any YouTube video 2. Click "Create Stack" in the TubeStack sidebar panel 3. AI summarizes the video transcript into categorized flashcards 4. Flip through cards, tap timestamps to jump to that exact moment ────────────────────────────────────── WHY TUBESTACK BEATS OTHER YOUTUBE SUMMARIZERS ────────────────────────────────────── Most YouTube summarizer extensions give you a plain text dump. TubeStack goes further — it structures the AI summary into topic-grouped flashcards you can actually study from, turning passive watching into active learning. ────────────────────────────────────── FEATURES ────────────────────────────────────── - AI YouTube summarizer built into the sidebar — no tab switching - Flashcards generated from any YouTube video transcript - Cards grouped by topic for easy navigation - Tap any card to jump to that timestamp in the video - Flashcard flip animation for self-testing and recall - Saves your stack so it reloads instantly on return visits - Sign in with Google to sync your stacks across devices ────────────────────────────────────── PERFECT FOR ────────────────────────────────────── - Students summarizing lecture recordings and university talks - Developers learning from coding tutorials and tech breakdowns - Professionals watching industry webinars and conference talks - Anyone using YouTube as a learning tool who wants to retain more ────────────────────────────────────── ALSO WORKS AS ────────────────────────────────────── - YouTube transcript summarizer - AI video summary tool - YouTube to notes converter - YouTube study tool - Video lecture summarizer No tab switching. No copy-pasting. Just open a video, summarize it, and start learning.