Question: Is there a browser extension that can help me summarize and analyze documents and videos I find online?

Liner is an AI copilot that can summarize documents, generate programming code and draft emails. It can summarize articles, PDFs and YouTube videos with a single click, which makes it a good tool for researchers, scientists and professionals. The tool also has interactive PDF collaboration, AI-powered writing assistance and a personal workspace to house content you've highlighted. Liner can be added with a browser extension and has a variety of pricing options for different users.

Another good option is Gist AI, a free Chrome extension that uses ChatGPT to summarize web pages, YouTube videos and local or online PDFs. It can summarize documents immediately, add a "read more" option to access original source material and navigate YouTube videos. It's good for students and professionals who want to quickly get the gist of longer documents.

ChatWithPDF offers a similar interface, summarizing PDFs, YouTube videos and documents and letting you have interactive chats to ask follow-up questions. It's a Chrome extension, but premium features are available with a subscription. That makes it a good option for researchers, professionals and students.

If you want a more elaborate knowledge management system, check out Recall. This tool summarizes web pages, including YouTube videos and PDFs, and stores it in a personal knowledge base. It uses AI to connect new information to what you already know, categorize information and even use spaced repetition to help you learn better. With extensions for Chrome and Firefox, Recall is a good tool for anyone who wants to work smarter.