A little code.
Something to remember.

Explore the source, flip the cards, and open the generated decks in Anki. These web previews use the same fields as the downloads.

Download the four-card deck Read the complete source

Basic

A Spanish greeting with a question, an answer, and an explicit stable ID. Start here for simple front-and-back cards.

basic.rsRust excerpt

let (front, back) = ("hola", "hello");
let mut project = Project::new("spanish")?.default_deck("Spanish");
project.add("es:hola", Note::basic(front, back))?;
let built = project.build(BuildOptions::to(output.join("spanish.apkg")))?;

Spanish

Spanish → English

hola

What does this mean?

Download spanish.apkg 1 note · 1 card · 0 media files

Cloze

Hide a word in context with Anki’s cloze syntax. This note has one deletion, so it generates one card.

cloze.rsRust excerpt

let text = "A sound's pitch depends on its {{c1::frequency}}.";
let extra = "More cycles per second, higher pitch.";
let mut project = Project::new("website-sound")?.default_deck("Sound");
project.add("sound:pitch", Note::cloze(text).field("back_extra", extra))?;
let built = project.build(BuildOptions::to(output.join("sound.apkg")))?;

Sound

Complete the sentence

A sound's pitch depends on its […].

Download sound.apkg 1 note · 1 card · 0 media files

Media

An image and a playable tone, packaged with the note. This excerpt uses an ear-training note type defined in the full source.

media.rsRust excerpt

let (prompt, answer) = ("Name this pitch.", "A4, 440 Hz");
let picture = Media::file(output.join("waveform.svg"))?.with_export_name("waveform.svg")?;
let audio = Media::file(output.join("concert-a.wav"))?.with_export_name("concert-a.wav")?;
project.add(
    "sound:a4",
    model
        .note()
        .field("prompt", prompt)
        .field("answer", answer)
        .field("picture", picture.image())
        .field("audio", audio.sound()),
)?;
let built = project.build(BuildOptions::to(output.join("ear-training.apkg")))?;

Ear Training

Ear training

Name this pitch.

Illustrative waveform of a synthesized tone

Download ear-training.apkg 1 note · 1 card · 2 media files

Image Occlusion

A keyed rectangle hides the nucleus in an illustrated cell cross section. The downloadable deck uses the same image and mask as this preview.

occlusion.rsRust excerpt

let image =
    Media::file(output.join("cell-anatomy.png"))?.with_export_name("cell-anatomy.png")?;
Ok(Note::image_occlusion(image)
    .mask(Mask::rect("nucleus", 296, 106, 240, 232))
    .build()?
    .field("header", "Cell anatomy")
    .field("back_extra", "Nucleus"))

Cell Anatomy

Cell anatomy

Which structure is hidden?

Animal cell cross section with one structure hidden

Download cell-anatomy.apkg 1 note · 1 card · 1 media file

One note, two versions.

The second build changes the answer from “hello” to “hello; hi”. It compares against the first package and checks that the note identity is preserved.

let comparison = project.compare(CompareOptions::against(&previous))?;
ensure!(comparison.policy().allows_publication());
let built = project.build(BuildOptions::to(&next).update_from(&previous))?;

Stable note IDes:hola

Front

hola

Back

hello

Try a content change.

Comparison results: RISK.NOTE_CHANGED (low). Publication policy: allows this change.

Download v1 Download v2 Comparison report

Keep the original distribution APKG. Import settings and newer local edits affect updates. Update guide

Download v1 Download v2 Read the update workflow

Anki’s import settings and local edits affect how updates are applied. The previews show content and identity; card styling and review behavior come from Anki.