Tools for making flashcards from highlights

It focuses on automatically turning existing notes/PDF study materials into flashcards, but it isn’t specifically described as a highlight-first reading annotation app.

Won’t cover: It turns notes and documents into flashcards, but it isn’t clearly positioned as highlighting text in a reading flow.

Knowt provides AI flashcards and notes in one study app and addresses the “flashcards manually” problem, but the content capture path (reading + highlighting) isn’t described as its core flow.

Won’t cover: It’s an all-in-one study app, but the reading-and-highlighting capture workflow into cards isn’t the focus of its description.

It’s designed to keep Kindle and paper-book highlights organized in one place, which helps with the “highlights scattered” issue, but the listing doesn’t say it converts highlights into flashcards/notes/vocabulary automatically.

Won’t cover: It organizes reading highlights, but it doesn’t explicitly turn those highlights into flashcards or vocabulary lists.

It turns selected web text into enriched Anki flashcards, which closely matches “automatic flashcards from highlighted/selected text,” but it’s a browser extension and is specifically Anki-focused rather than creating notes/vocabulary lists inside a general study system.

Won’t cover: It generates Anki cards from selected web text, but it’s not positioned as a general in-app reading/highlighting workflow for flashcards, notes, and vocabulary lists.