Open-source JS library renders Office files in the browser

A browser-based viewer for Office Open XML documents

Silurus/ooxml is an open-source JS library that renders .docx, .xlsx, and .pptx files directly in the browser using a Rust/WASM engine and Canvas 2D. No server-side conversion, native app, or iframe needed. Supports paginated layout, complex tables, charts, math equations, comments, SmartArt, and more. Latest v0.84.1 improves Word text-box spacing; v0.84.0 adds optional TIFF image support. All files stay local.