Data month 2026-09
Best AI Notes & Knowledge Browser Extensions
As of September 2026, AlphaMoat tracks 909 AI browser extensions tagged AI Notes & Knowledge. The most-installed is Glasp Web Highlighter (500.0K users). Ranked by install count, updated monthly.
| # | Extension | Publisher | Users | Rating |
|---|---|---|---|---|
| 1 |  Glasp is a free web and PDF highlighter that turns your reading into organized, shareable notes with AI-powered summaries. | GLASP | 500.0K | ★ 4.4 |
| 2 |  YouTube to NotebookLM is a connector that sends any YouTube video, playlist, or channel straight into Google's NotebookLM for AI notes. | - | 500.0K | ★ 4.9 |
| 3 |  Save YouTube videos, playlists, web pages, and feeds to Gemini Notebook in one click. | notebooklm-web-importer | 300.0K | ★ 4.7 |
| 4 |  Eightify is a YouTube summarizer that turns long videos into concise key insights and timestamped summaries with AI. | Eightify | 200.0K | ★ 4.0 |
| 5 |  Wikiwand is a modern Wikipedia reader that adds AI chat, timelines, and fact-checking to every article you read. | wikiwand | 200.0K | ★ 4.7 |
| 6 |  Web Highlights is a highlighter and note-taking extension for websites and PDFs, with AI summaries of your saved content. | web-highlights | 200.0K | ★ 4.8 |
| 7 |  NotebookLM Ultra Exporter turns Gemini NotebookLM notebooks into Markdown, PDF, and other downloadable formats in one click. | yekyos | 100.0K | ★ 4.1 |
| 8 |  Mapify turns YouTube videos, PDFs, webpages, and chats into interactive AI-generated mind maps for faster learning and summarization. | SUPERMIND | 100.0K | ★ 4.1 |
| 9 |  Kortex extends NotebookLM with one-click saving of AI chats and pages, chat export, source folders and a prompt library in a sidebar. | kortex-notebooklm | 100.0K | ★ 4.7 |
| 10 |  Youtube Transcript converts any YouTube video into text transcripts and ChatGPT-powered summaries without requiring an account. | youtube-transcript | 100.0K | ★ 4.5 |
| 11 |  Save, summarize, and auto-organize everything you read into an AI knowledge base you can chat with. | Recall Wiki | 100.0K | ★ 4.4 |
| 12 |  AI Summary for YouTube generates concise ChatGPT-powered summaries and transcripts of any YouTube video with one click. | chatgpt4youtube | 100.0K | ★ 3.1 |
| 13 |  NotebookLM Tools adds bulk importing, collections, folders, source labelling and studio-item downloads to Google's NotebookLM and Gemini Notebook. | nlmtools | 90.0K | ★ 4.7 |
| 14 |  Sidebar extension that imports web links, articles, and YouTube videos into NotebookLM notebooks. | aisidebar | 80.0K | ★ 4.7 |
| 15 |  WebSync drives the site open in Chrome and sends the captured content to Gemini Notebook, Google Sheets, Google Drive, the clipboard or a local folder. | getwebsync | 70.0K | ★ 4.5 |
| 16 |  This NotebookLM extension adds folders, tags, prompts, bulk importing, exports and merging to Google's notebook app. | extendlm | 70.0K | ★ 4.8 |
| 17 |  Chat to Notion saves ChatGPT and AI conversations into Notion so they become searchable, organized notes. | Théo Lartigau | 70.0K | ★ 3.7 |
| 18 |  YoutubeDigest summarizes and translates YouTube videos with ChatGPT, turning long videos into concise, readable notes. | YoutubeDigest | 60.0K | ★ 4.0 |
| 19 |  This Scripsy extension turns YouTube videos and lectures into transcripts and summaries, with timestamps and free copying of the text. | scripsy | 60.0K | ★ 3.9 |
| 20 |  This extension makes ChatGPT and Gemini transcripts and summaries for YouTube videos, even ones with no captions, entirely inside YouTube. | videotranscriber | 60.0K | ★ 4.7 |
| 21 |  LilysAI saves and summarizes articles, videos, and PDFs into structured, revisitable notes and mind maps. | lilys | 60.0K | ★ 4.7 |
| 22 |  Bookshelf is a folder manager for Gemini Notebook that adds folders, subfolders, cloud sync, search, sorting, dark mode, and export or import. | - | 50.0K | ★ 4.3 |
| 23 |  Cubox is a highlighter, clipper, and AI reader that helps you read, annotate, and take notes with an AI assistant by your side. | Cubox | 40.0K | ★ 3.2 |
| 24 |  YouMind is a personalized AI learning and creation agent that clips web content, takes YouTube notes, and annotates with Claude and Gemini assistance. | Mind Motor | 40.0K | ★ 4.9 |
| 25 |  Snipo sends timestamped YouTube and Udemy notes to Notion, generates AI flashcards and syncs courses with your Notion workspace. | snipo | 40.0K | ★ 4.6 |
| 26 |  FolderLM organizes your NotebookLM workspace with folders, bulk import, merge sources, and a prompt library. | utkarshnotes | 40.0K | ★ 4.2 |
| 27 |  Notebook Clipper saves YouTube videos, AI chats, and any page into Gemini Notebook in one click. | notebookclipper | 30.0K | ★ 4.9 |
| 28 |  TinaMind is an AI assistant that chats, searches, writes, translates, and summarizes across your browser and YouTube. | TinaMind | 30.0K | ★ 4.5 |
| 29 |  Slid is a video note-taking tool that captures screens, transcribes lectures in real time, and lets you write notes with ChatGPT. | Slid | 30.0K | ★ 4.5 |
| 30 |  AI guide that quickly distills complex YouTube videos into key summaries, articles, and timelines. | LiveWiki | 30.0K | ★ 4.5 |
| 31 |  MarkSnip is a one-click web clipper that saves pages, selections and tabs as clean Markdown for note apps, AI agents and LLMs. | Dhruv Parikh | 30.0K | ★ 4.7 |
| 32 |  Paywall-Free Reader opens premium articles in a clean layout, finds open-access versions, and summarizes them with AI for later reading. | Muaad Abdirahman | 20.0K | ★ 2.9 |
| 33 |  TwinMind is an AI second brain that transcribes meetings and lectures without bots and searches across all your past notes and context. | ThirdEar AI | 20.0K | ★ 4.8 |
| 34 |  Fabric is an AI-powered workspace that saves, organizes and helps you rediscover everything you capture from the web. | fabric | 20.0K | ★ 4.3 |
| 35 |  HoverNotes turns videos on YouTube, Udemy, Coursera and similar sites into structured Markdown notes saved directly to an Obsidian vault. | HoverNotes | 20.0K | ★ 4.6 |
| 36 |  Capture links, text and images, then let AI turn them into or enhance mind maps. | mindomo | 20.0K | ★ 4.0 |
| 37 |  Kome summarizes any webpage or YouTube video and manages bookmarks in one click from your browser. | Kome | 20.0K | ★ 2.4 |
| 38 |  GitMind AI turns any content into mind maps and summaries, and edits images, audio, video and PDFs in one plugin. | gitmind | 20.0K | ★ 4.1 |
| 39 |  Copilot by Paradigm is an AI study sidebar for Chrome that turns pages and documents into flashcards, quizzes, notes and active recall sessions. | Psyber Solutions | 20.0K | ★ 3.8 |
| 40 |  YouTube Summary with AI turns any YouTube video into a short summary using ChatGPT, Gemini, Claude, Mistral or Grok, with no sign-up. | dictanote | 20.0K | ★ 4.3 |
| 41 |  Export ChatGPT conversations to Markdown with clean support for code, LaTeX equations, and tables. | TinyFlow Labs | 10.0K | ★ 4.5 |
| 42 |  Download ChatGPT, Claude, Perplexity and Phind conversations into clean, structured Markdown files. | hugocollin | 10.0K | ★ 4.1 |
| 43 |  Summarize web pages and YouTube videos in one click, with background context and counterarguments for deeper learning. | Shortform | 10.0K | ★ 3.9 |
| 44 |  Export NotebookLM chats, quizzes, flashcards, mindmaps, notes, and reports to many formats, with cloud delivery. | - | 10.0K | ★ 4.8 |
| 45 |  Exports DeepSeek chat conversations to PDF, HTML, Markdown, JSON, TXT, and Word formats. | deepseek-ai | 10.0K | ★ 4.4 |
| 46 |  GPT Master adds a side chat, prompt tools, timestamps, bookmarks, folders, and follow-up controls to ChatGPT. | gptmaster | 10.0K | ★ 4.8 |
| 47 |  Save ChatGPT conversations to TXT, PDF or Markdown files or copy them to the clipboard. | SAVE ChatGPT | 10.0K | ★ 3.0 |
| 48 |  AI assistant that summarizes web pages and PDFs and drafts shareable insights for professionals. | Casperstudios | 10.0K | ★ 4.4 |
| 49 |  Sortbase organises and transfers your AI chats across ChatGPT, Claude, Gemini and Grok with shared folders, search and a prompt library. | Sortbase | 10.0K | ★ 4.0 |
| 50 |  ChatGPT-like assistant for questions and task automation, with web clipping into notes. | NIMBUS WEB | 10.0K | ★ 4.5 |
Related tags
FAQ
AI Notes & Knowledge Chrome extensions: which ranks #1?
In September 2026, Glasp Web Highlighter (500.0K users) ranks #1 by users, followed by YouTube to NotebookLM (500.0K users) and NotebookLM Web Importer (300.0K users).
AI Notes & Knowledge Chrome extensions: what are the top 10?
Ranked by users, the top 10 are: 1. Glasp Web Highlighter, 2. YouTube to NotebookLM, 3. NotebookLM Web Importer, 4. Eightify, 5. Wikiwand, 6. Web Highlights, 7. NotebookLM Ultra Exporter, 8. Mapify, 9. Kortex NotebookLM, 10. Youtube Transcript.
How many AI Notes & Knowledge Chrome extensions does AlphaMoat track, and where does the data come from?
AlphaMoat tracks 909 AI Notes & Knowledge Chrome extensions, ranked by users. User counts come from public Chrome Web Store data. Updated monthly; the current data is for September 2026.
Lists every Chrome extension carrying this tag, ranked by latest-month install count. See methodology.