Local-first PDF active recall

Turn PDFs into active recall study sheets.

Import lecture slides, reviewers, worksheets, or notes. Add revealable stickers directly on the page, then test yourself without making traditional flashcards from scratch.

Open LibraryReview Due Stickers
1

Import once

PDFs are stored locally in your browser so you can reopen them later.

2

Add stickers

Place SVG-based stickers over definitions, labels, answers, or concepts.

3

Tap to reveal

Study mode hides answers until you tap, then schedules reviews.

Your PDFs stay on this device by default. Export a backup for extra safety.