An Anki deck viewer and reviewer that runs entirely inside your browser.
Anki Browser lets you open Anki deck files (.apkg shared decks and .colpkg collection backups), browse the cards, and review them with spaced repetition — all in your web browser. You don't need to install the Anki desktop app, and you don't need an account. Everything is parsed on your device — your file is never uploaded to a server.
Anki files are just a container (a zip with a SQLite database inside). The browser can read them directly with WebAssembly, so the whole experience — browsing cards, seeing images and audio, cloze deletions, the review scheduler — runs in a normal web page. Download a shared deck and start studying in seconds.
For browsing and reviewing there is no account, no cloud, and no tracking. Review progress is saved locally in your browser (IndexedDB) and stays on this device. If you clear your browser data, your progress for a deck is cleared too.
A GitHub account is only involved when you deliberately submit a deck to share — it identifies the submitter and lets us tell you the review result. See the Privacy Policy.
The built-in scheduler is the classic SM-2 spaced-repetition algorithm used by Anki for over a decade. Each card offers four ratings — Again, Hard, Good, Easy — and the next review interval is computed from your answer.
This tool is part of the Endril project — spatial intelligence, remote sensing, and open learning tooling. Visit endril.com to learn more.