Office-open-xml-viewer: Office XML document viewer rendering to HTML Canvas
Original: Office-open-xml-viewer: Office XML document viewer that renders to HTML Canvas
A browser-based Office Open XML viewer that renders DOCX, XLSX, and PPTX files to HTML Canvas.
office-open-xml-viewer is an open-source browser viewer for Office Open XML documents, rendering DOCX, XLSX, and PPTX files to HTML Canvas. Its parsers are written in Rust and compiled to WebAssembly, while rendering uses the Canvas 2D API. The README also says the full codebase was implemented by Claude through iterative prompting, making it notable as an AI-assisted software development case.
office-open-xml-viewer is an open-source, browser-side Office Open XML document viewer whose goal is to render common Office document formats directly onto an HTML Canvas. As the project README shows, it supports three format categories—DOCX, XLSX, and PPTX—with the parser written in Rust and compiled to WebAssembly, while front-end rendering uses the Canvas 2D API. This means it does not simply convert documents to images or rely on an external service, but rather parses the structure of Office documents into a model that the browser can draw, then completes the presentation of text, layout, charts, shapes, and other content on the main thread.
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