office

Status : Production Ready Last Updated : 2026-01-12 Dependencies : None (pure JavaScript libraries) Latest Versions : docx@9.5.0, xlsx@0.18.5, pdf-lib@1.17.1, pptxgenjs@4.0.1 Generate Microsoft Office documents and PDFs programmatically with TypeScript. All libraries are pure JavaScript with zero native dependencies, enabling universal runtime support: *PPTX in Workers: Works for local images/data. Remote image fetching needs workaround (uses https module). The docx package uses a builder pattern: SheetJS (xlsx) uses utility functions: pdf-lib uses a page-based approach: pptxgenjs uses a slide-based approach: All four libraries work in Cloudflare Workers (PPTX with caveats for remote images). For complex layouts with CSS, use Cloudflare Browser Rendering (paid feature): wrangler.jsonc binding: ✅ Use await Packer.toBuffer() for DOCX (it's async) ✅ Remember PDF coordinates start at BOTTOM-LEFT ✅ Use type: 'buffer' for XLSX in Workers/browser ✅ Embed fonts in PDF before using them ✅ Set proper Content-Type headers for downloads ✅ Use await pptx.writeFile() or await pptx.write() for PPTX ✅ Use base64 images in PPTX for Workers (avoid remote URLs) ❌ Use Packer.toBuffer() without await (returns Promise) ❌ Assume PDF y=0 is at top (it's at bottom) ❌ Use writeFile in Workers (use Response instead) ❌ Forget to set Content-Disposition for downloads ❌ Use Node.js fs module in...