OpenPageFlip

OpenPageFlip is a page-turn effect for the web, published as two npm packages. @openpageflip/core is a framework-agnostic engine that does the page-fold geometry, shipped as ESM plus a build that works from a plain script tag. @openpageflip/react is a set of React 19 bindings on top of it.

It exists because StPageFlip and react-pageflip, the libraries the effect and its geometry come from, stopped being maintained and fell behind current browsers, TypeScript and React. OpenPageFlip is a maintained successor to both, rebuilt in strict TypeScript.

Both packages are pre-1.0, so the API can still change. The docs site has live demos and the API reference, and SPEC.md in the repo has the plan and the decisions that are still open.