Question: Do you know of a free online tool that can help me extract key points and metadata from articles and papers?

If you're looking for a free online tool to extract key points and metadata from articles and papers, Scholarcy is a good option. It's an AI summarization tool geared specifically for academic papers with features like interactive summary flashcards, summary generation, note-taking and bibliography generation. It has a free plan with daily limits on the number of summaries you can generate, but it's a good starting point for students and researchers trying to get a handle on complex information.

Another option is Elicit, an AI research assistant that can search, summarize and extract data from more than 125 million academic papers. It can handle a variety of file formats and can be used for tasks like literature reviews, systematic reviews and meta-analyses. Elicit offers a free version with limited credits and features, so it's a good option for people who need to use it only occasionally.

If you want a quick summary, TLDR This offers an AI-powered service to summarize long articles and documents into bite-sized chunks. It can handle many file formats and offers features like instant summarization, metadata extraction and distraction-free reading. The tool is free to use with no setup or fees, so it's good for people who need to process lots of text regularly.