Office to PDF in your browser
Turn Word, PowerPoint, and Excel files (.docx, .pptx, .xlsx), plus simple HTML files, into PDFs right in your desktop browser. A full open-source office suite runs on your computer, so contracts, decks, and spreadsheets are never uploaded.
- Convert DOCX, PPTX, XLSX, and HTML in one place.
- A full office engine runs right in your browser.
- No uploads, which matters for contracts, decks, and spreadsheets.
- The engine (about 30 MB) is cached after the first use.
How to use Office to PDF
- Open this page in a desktop browser and choose Word, PowerPoint, Excel, or HTML.
- Choose your file, confirm the engine requirements, and click Convert to PDF.
- Download the PDF and check page breaks, fonts, and sheet or slide layout.
Technical notes & limits
- Needs a desktop browser with SharedArrayBuffer and about 1 GB of memory. Phones and older .doc, .ppt, and .xls files aren’t supported.
- Scripts, styles, and outside links are removed from HTML files before conversion.
What your computer needs
Running a full office suite in a browser needs a feature called SharedArrayBuffer and about 1 GB of memory. The first time you use it, your browser downloads about 30 MB of engine files from this site and starts the converter in a background worker.
Supported files, and what to check
It accepts modern Office files (.docx, .pptx, .xlsx) and self-contained .html files. For safety, scripts, styles, and outside links are removed from HTML. Always look over the PDF for substituted fonts, wide spreadsheet areas, and slide layouts.
Frequently asked questions
Why is Office to PDF only supported on desktop browsers?
The office engine needs about 1 GB of memory and multi-threading features that phone browsers restrict.
Does the 30 MB Office engine download every time I convert a file?
No. Your browser caches it, so later conversions start much faster.
Are my Word, Excel, or PowerPoint files ever uploaded?
No. Only the converter itself is downloaded. Your documents stay in your browser’s memory.