According to AlphaMoat, as of 2026-09, the Chrome extension SummarizAI has 92 users (+206.7% MoM), rated 4.6 (11 reviews) — ranked #4,353 of 9,324 AI browser extensions, and #330 of 676 in Education & Research.
What is SummarizAI
Summarize YouTube videos and webpages. Ask questions or study with flashcards. Page text is sent only when you use those tools. SummarizAI is an AI YouTube Summarizer helps you understand YouTube videos — and any webpage — faster with AI-powered summaries, chapters, timestamps, chat, flashcards, quizzes, study notes, and fact checking. Use the in-page panel on YouTube watch pages, or open the Chrome side panel on articles, docs, and other sites for Summary, Chat, and Flashcards.
Stop wasting time scrubbing through long videos or rereading dense pages. SummarizAI adds an AI summary experience beside YouTube and a side-panel toolkit for the rest of the web so you can capture key ideas, important moments, and useful takeaways quickly.
What SummarizAI can do:
- Summarize YouTube videos with AI
Generate clear, structured summaries from video transcripts and captions.
- Summarize any webpage
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Open the side panel on HTML pages to extract readable text and get a concise AI summary. Browse previous page summaries in History and reload a saved summary anytime (no re-run required).
- Create timestamped chapters
See the main sections of a video and jump directly to the moments that matter.
- Chat with YouTube videos
Ask questions about the video and get answers based on the content.
- Chat about the current page
Ask grounded questions from the side panel using the readable text of the active tab.
- Generate flashcards
Turn educational videos, tutorials, lectures, podcasts — and webpage content — into study cards.
- Take quizzes
Test your understanding with AI-generated quiz questions.
- Create study notes
Convert long videos into organized notes for learning, research, or review.
- Fact check video claims
Analyze key claims from a video and review AI-assisted verification.
- Customize your summary
Choose summary length, format, language, style, and AI persona.
Privacy note: webpage text is sent only when you use Summary, Chat, or Flashcards in the side panel.
Whether you are watching educational videos, tutorials, interviews, podcasts, documentaries, business content, coding lessons, or reading articles and documentation, SummarizAI helps you save time and understand more.
No more endless rewinding. No more missing the main point. No more watching an entire video — or skimming an entire page — just to find one useful idea.
SummarizAI brings AI video summaries, YouTube transcript summarization, webpage summarization, AI chat, flashcards, quizzes, study notes, fact checking, timestamped chapters, and side-panel page tools into one simple Chrome extension.
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Extension profile
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Popular in Education & Research
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+ CompareData month: 2026-09 · User counts and ratings come from public Chrome Web Store data, aggregated monthly. See methodology.