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Open-source JavaScript Office file viewer Rust / WebAssembly / Canvas 2D Rust · WebAssembly · Canvas 2D Office documents,rendered in thebrowser. @silurus/ooxml is an open-source JavaScript Office file viewer library for .docx, .xlsx and .pptx. Its Rust/WASM engine parses and renders each file to Canvas in the browser; no server-side document conversion, native application or iframe is required. DOCXPaginated documents XLSXInteractive workbooks PPTXSlides & media Try yoursLocal files stay local About the library Browser-based OOXML rendering.
Rust/WASM parsers and Canvas renderers for DOCX, XLSX and PPTX, with document APIs and ready-to-use viewers. Rust/WASM parsers DOCX, XLSX and PPTX parsing is implemented in Rust and compiled to WebAssembly. Canvas rendering Documents are rendered with the Canvas 2D API. Layout and feature support vary by format and document. Specification-informed The implementation refers to ECMA-376 / ISO 29500 and related Microsoft documentation where relevant. Document APIs and viewers Use built-in viewers or document APIs for custom previews, thumbnails and navigation. Live in this page Live renderer examples. Switch formats, navigate pages or slides, and scroll the sheet. sample-1.docx live · WASM Format documentation: DOCX · XLSX · PPTX What it renders Format support at a glance. Selected supported features for each format are listed below. See the README for the full matrix; complex documents may still differ from Office.
DOCX.docx Paginated layout with headers, footers & sectionsComplex tables with borders, fills & merged cellsInline / anchored images, optional TIFF decoding and DrawingML shapes with image fillsCJK typography: ruby, vertical writing & line gridsMath equations, classic charts and optional ChartEx / 3-D / Region Map renderingTracked-change markup, text / element context, progressive virtualized scroll, zoom, find & links Full support matrix ↗ XLSX.xlsx Multi-sheet workbooks with frozen panes & outlinesCached formulas, dates and Excel number formatsClassic charts, optional ChartEx / 3-D / Region Maps, sparklines and conditional formattingImages with optional TIFF decoding, drawing shapes and styled slicersPivot metadata, comments and CJK cell textMultiple-area selection, range / element context, TSV copy, find, internal links, zoom & drag-resize Full support matrix ↗ PPTX.pptx Slide master and layout inheritancePreset / custom shapes, groups and SmartArt textGradient fills, picture effects and 3D shadingClassic combo and stock charts, plus optional ChartEx / 3-D / Region MapsWordArt, embedded fonts, optional TIFF images, math equations and embedded audio / videoTable text selection, text / element context, progressive virtualized scroll, zoom, find & links Full support matrix ↗