What is dotlottie-io?

dotlottie-io is a library for creating, reading, and modifying .lottie files. Its core is written in Rust and compiled to two targets: a native Node.js addon (via N-API) and WebAssembly for the browser. Both bindings expose the same class-based API.

The "-io" in the name

dotlottie-io only handles reading and writing the .lottie container format — unpacking, packing, merging, and querying its contents. It is not:

• A player or renderer (that's the job of the various dotLottie Players)

• A design tool — it doesn't create Lottie animations, only packages them

If you need to render .lottie files, see dotLottie Players. If you need to create the underlying Lottie animation content, that comes from a design tool like After Effects or a platform like LottieFiles.

dotlottie-io will supersede dotlottie-js

If you have an existing dotlottie-js project, see the migration guide for a full comparison and code-for-code examples.

Next up: Installation