Postilae

Postilae is a reading workspace: it lets you read PDF, EPUB, and DOCX files, take notes and highlights, organize books and reading sessions, and connect your reading to written projects and ideas.

Postilae is currently offered free of charge.

You can explore the Service without an account, but nothing is normally retained unless you create one. Work in an unauthenticated session is lost when you close or reload the app. If you deliberately begin creating an account, Postilae temporarily places a same-tab handoff copy in browser session storage so your current work can survive the authentication redirect. That handoff expires within 24 hours, is not uploaded before authentication and passphrase setup, and is removed when signup is completed, rejected, or expires.