Animo builds both dynamic HTML and static PDF presentations using typst.

The short tour of Animo gives a quick impression of its capabilities.

A minimal single-slide deck with a single animation looks like this:

#import "@preview/animo:0.1.1": *
#show: animo.with(width: 16cm, height: 9cm, margin: 1cm)

#slide(animation: {
  import anim: *
  sub(reveal("punchline"))
})[
  = Hello

  This is static text shown right away.

  #tag("punchline")[This will only appear on the next subslide.]
]

The body of a slide defines the contents and tags the parts an animation may address. The animation argument says when and how tagged parts move or change.

Key features:

• One source file compiles to an animated HTML deck, a presentation PDF and a handout PDF.
• The HTML presentation comes with a runtime that supports visual effects, such as moving, scaling, fading, replacing, resetting, hiding and revealing content.
• Slides are drawn on a canvas that can be larger than the slide, so the deck can pan over it.
• Plain typst inside a slide: no template machinery and no theme to learn.
• Every position in a deck is a URL, so a deep link lands on a subslide.
• Content and animation stay separate, so a slide body reads as a document.
• Extensive validation of HTML outputs against different browser engines with playwright.

Examples

A deck opens in a new tab and is stepped through with the arrow keys or a click.

Status

Animo is currently a proof of concept. API stability is not strictly guaranteed before a 1.0 release, but no major breaking changes are planned. Despite the version number, it already has enough features to make a complete presentation, with a unique approach to animations.

Where to Go Next

• Presentation Author Guide, which covers everything from writing a slide up to what a deck costs to compile
• Reference, every public name and its arguments
• Animo Development Guide, for changing Animo itself
• planning/design.md, the specification, including the reasoning behind every decision, and planning/findings.md, the verified typst and browser behaviour it rests on
• CONTRIBUTING.md

License

Apache-2.0. See LICENSES/Apache-2.0.txt.