Docxion uses a WebView-based architecture that keeps the rendering logic in the TypeScript viewer while preserving a clean, embeddable Android integration, making it easier to update the viewer without redesigning the Android API.

Documentation explains embedding Docxion in an Android project via JitPack, using the Jetpack Compose DocxionViewer component, and opening documents through the API.

Docxion is focused on viewing rather than editing, offering a native-like API surface for actions such as open/close files, navigate pages, zoom, fit-to-width/page, search and results navigation, text extraction, theming, printing, and destroying the viewer.

The viewer consists of three main parts—a Kotlin/Jetpack Compose Android library, a TypeScript/React-based underlying office-viewer, and an Android example app—with an Android WebView serving as the bridge between them.

The project is early in development, with ongoing work on formats support, rendering fidelity, and potential API/packaging changes, but with a clear aim to become a reusable, embeddable document viewing component for various applications.

The TypeScript viewer exposes a straightforward ViewerAPI with methods like openFile, closeFile, goToPage, getCurrentPage, setTheme, print, and destroy, which are mapped to Android API calls.

Docxion is an open-source, Apache 2.0 licensed project designed to simplify embedding Microsoft Office document viewing in apps, avoiding licensing or heavy SDK requirements.

Communication between Kotlin and JavaScript is bidirectional via a WebView bridge: the Android side uses DocxionWebViewApi to call into the viewer, while the viewer can emit events back to the Android app through a JavaScript bridge, enabling responsive UI interactions.

The architecture deliberately separates the Android layer from the viewer, allowing the TypeScript viewer to evolve independently from the Android API for cross-platform consistency.