How it works

Render a .docx or .doc to PDF in your browser using LibreOffice WASM. No upload, fonts preserved.

Most online Word-to-PDF converters render server-side, which means you upload the document and trust their handling. This tool runs LibreOffice compiled to WebAssembly in your browser. On first use, the LibreOffice bundle (~300 MB) loads and caches. After that, conversion is offline. Formatting fidelity is high for documents that used standard styles, common fonts, headers / footers, and tables. Fonts not installed in LibreOffice (proprietary corporate fonts, custom downloaded fonts) fall back to a similar generic, which can shift line breaks. For pixel-perfect output, install the source fonts on the machine that originally created the .docx and print to PDF there. Note: the LO WASM bundle isn't fully self-hosted yet; the tool will return an honest error message until it's deployed.

How to use it

1. Drop your document. Both modern .docx and legacy .doc are supported.
2. Wait for the engine on first use. The LibreOffice WASM bundle (~300 MB) downloads once and caches.
3. Convert. Rendering happens locally; custom fonts fall back to similar generics if not bundled.
4. Download the PDF. Check the layout — standard fonts, tables, and headers convert cleanly.

Frequently asked questions

Does the formatting stay intact?

Mostly. Standard fonts, tables, lists, headers, footers, images, and basic styles convert well. Custom fonts may fall back to a similar generic.

Is my document uploaded?

No. LibreOffice WASM converts locally in your browser, no upload.

Does it support .doc as well as .docx?

Yes, LibreOffice reads both legacy .doc and modern .docx.

Why is the first conversion slow?

The LibreOffice engine downloads on first use (~300 MB), then caches forever. Subsequent conversions are fast.