Tags#
Tags are labels you attach to decks and facts to organize and filter your material. They belong to your account, not to a single deck — you create a tag once and can use it on many decks and many facts.
Tags are optional. Decks and facts work fine without them; tags help when you want to group content (for example verb, JLPT N3, or hard) or study a subset of cards in a deck.
How tags relate to decks and facts#
| Where | What tags do |
|---|---|
| Deck | Mark the whole deck (e.g. Japanese, exam-prep). Up to 100 tags per deck. |
| Fact | Mark individual items inside a deck (e.g. noun, food). A fact can have several tags. |
Fields define columns on a deck; tags are separate metadata for filtering and organization. Facts still store entries only — tags are linked alongside the fact, not inside entry text.
The same tag name can appear on multiple decks and multiple facts. Deleting a tag removes it everywhere it was attached.
Across one deck, distinct fact-level tags are capped (union across all facts in that deck, up to 200).
Creating and managing tags#
You can add tags when you create or edit a deck or fact (pick existing tags or create by name), and you can manage your tag library from the app (create, rename, delete).
Each tag has a name and an optional description. Names must be unique for your account after normalization (trimmed, spaces collapsed, compared case-insensitively). Allowed characters include Unicode letters and numbers, spaces, hyphen (-), and apostrophe (').
Limits:
- Up to 1000 tags per user
- Up to 100 tags on one deck
- Up to 200 distinct fact tags per deck (union across facts)
Tagging facts and decks#
When you add or edit facts, you can attach optional tags — for example one row as verb and another as food. Different facts can have different tags, or none.
You can also tag a deck when you create it or later — useful for browsing your library, not for changing how individual cards are laid out.
Studying with tags#
During review, you can focus on cards whose facts have a given tag in that deck. Tags do not change a card’s front/back layout — they only narrow which cards are eligible for study.
Imported decks#
On decks you import, tags are yours for study filters and organization. Tag and content suggestions on imports can also be sent to the author as contributions; that is separate from your local labels. Shared fact bodies still follow the published snapshot until you sync an update. See Import an existing deck.
Summary#
Tags are per-user labels on decks and facts for organization and filtered study. They complement deck fields and fact entries, which hold the actual learning material.