Office to PDF
Convert Word, Excel, and PowerPoint files to PDF
Drag and drop your files here
or click to browse. Supports PDFs, PNG, JPG, DOCX, and more.
Supported formats
How it works
Uses ZetaOffice (LibreOffice compiled to WebAssembly) for pixel-perfect conversion. The engine downloads once (~50MB) and is cached for instant subsequent use.
About Office to PDF
Modufile's Office to PDF converter transforms Word, Excel, and PowerPoint files into PDF format using ZetaOffice — the full LibreOffice engine compiled to WebAssembly. This provides desktop-quality conversion fidelity, correctly handling tracked changes, footnotes, charts, embedded objects, complex formatting, and all the nuances that simpler converters miss. It supports DOCX, DOC, XLSX, XLS, PPTX, PPT, and their OpenDocument equivalents (ODT, ODS, ODP). The conversion engine (~50 MB) downloads once and is cached by the browser for instant subsequent use. Since everything runs client-side, your documents are never uploaded to a server — a significant privacy advantage over cloud-based converters.