Marginalia

Marginalia is a browser-based PDF and EPUB reader enhanced with AI that allows users to ask questions about the content they are reading. The AI provides answers citing exact passages and links users back to those sections. It features text reflow for easy reading on any device, supports annotations and highlights, operates without uploading user files, and works without requiring sign-up for initial usage. Designed to make reading and understanding technical, legal, medical, and scientific documents easier and more interactive.