Marginalia AI

Follow the threads your
highlights started.

Your highlights reveal what actually matters to you. We help you think deeper, find patterns, and discover what to read next.

More than a highlight organizer

Most tools store your highlights. We actually do something with them.

Capture what matters

Import your Kindle highlights, capture passages from the web, or jot down your own thoughts. One library for everything you found worth remembering.

Go deeper

AI finds the threads running through your highlights — the themes you keep returning to, the ideas worth sitting with, the questions your reading is circling.

Discover what's next

Get book recommendations based on what you actually care about — not what you bought, but the ideas you keep returning to.

Amazon knows what you purchased. Goodreads knows what you finished. Only your highlights know what you actually thought about.

Your highlights are waiting

Free to use. No credit card required.