A browser-based viewer for Office Open XML documents

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. Paginated layout with headers, footers & sections Complex tables with borders, fills & merged cells Inline / anchored images, optional TIFF decoding and DrawingML shapes with image fills CJK typography: ruby, vertical writing & line grids Math equations, classic charts and optional ChartEx / 3-D / Region Map rendering Tracked-change markup, text / element context, progressive virtualized scroll, zoom, find & links Multi-sheet workbooks with frozen panes & outlines Cached formulas, dates and Excel number formats Classic charts, optional ChartEx / 3-D / Region Maps, sparklines and conditional formatting Images with optional TIFF decoding, drawing shapes and styled slicers Pivot metadata, comments and CJK cell text Multiple-area selection, range / element context, TSV copy, find, internal links, zoom & drag-resize Slide master and layout inheritance Preset / custom shapes, groups and SmartArt text Gradient fills, picture effects and 3D shading Classic combo and stock charts, plus optional ChartEx / 3-D / Region Maps WordArt, embedded fonts, optional TIFF images, math equations and embedded audio / video Table text selection, text / element context, progressive virtualized scroll, zoom, find & links