Free tool · Convert
Word to PDF
Convert Word .docx documents to PDF in your browser.
Upload a .docx file and convert it to PDF using mammoth.js - a JavaScript Word parser that runs entirely in your browser. The document is rendered as HTML, displayed in a print-preview panel, and saved as PDF via your browser's print dialog. No Word license required. Headings, paragraphs, lists, tables, and basic formatting are all preserved.
- Files never leave your device
- Runs entirely in your browser
- Free, no account needed
How to use Word to PDF
Two steps, and nothing to install.
Drop your .docx file
Drop the Word file onto the tool, or click to browse and select it. It is parsed in your browser and never uploaded.
Review and save as PDF
Check the print preview panel, then use the browser print dialog and choose Save as PDF to write the file.
More free tools
Free, private, and no sign-up on any of them.
How this works in your browser
A .docx is really a ZIP archive containing XML that describes the document. mammoth.js unpacks that archive in your browser and translates the XML into semantic HTML, deliberately mapping Word styles onto real heading, list and table elements rather than trying to reproduce exact pixel positions. That rendered HTML is then handed to the browser print pipeline, where Save as PDF writes the final file. Leaning on the browser engine is why the output has genuinely selectable text and embedded fonts, and it is also the reason pagination follows browser rules rather than Word ones.
Word to PDF vs. upload-based online tools
| Feature | Word to PDF (in-browser) | Upload-based online tools |
|---|---|---|
| File upload required | No - never leaves your device | Yes - file is sent to a server |
| Processing queue | None - starts instantly | Often, especially at peak times |
| Watermark on output | Never | Common on free plans |
| Usage limits | None - free, unlimited use | Often capped per day or file size |
| Works offline once loaded | Yes, for most tools | No - requires a live connection |
| Account required | No | Often, for anything beyond a trial |
Common ways to use Word to PDF
Sending a CV or contract
Produce a PDF that looks the same for every recipient, rather than a .docx that reflows differently depending on their Word version.
Working without Microsoft Office
Convert a Word file on a machine that has no Office licence installed, without signing up for a cloud editor.
Locking a document before sharing
Hand over a version that is awkward to casually edit, which is often the point when submitting coursework or a proposal.
Frequently asked questions
What it can and cannot do, and what happens to your files.
Does it support .doc (older Word format)?
Only .docx (Word 2007 and later). Legacy .doc files are not supported. If you have a .doc file, open it in Word or LibreOffice and save as .docx first.
Will complex formatting like columns or text boxes be preserved?
Basic formatting - headings, paragraphs, bold, italic, tables - is handled well. Advanced layouts with text boxes, columns, or floating images may be simplified.
Are images inside the Word document included?
Yes. Embedded images are extracted and included in the rendered output, so they will appear in the PDF.
Why does it use the print dialog instead of downloading directly?
Because the browser already contains a mature, well-tested PDF writer behind Print to PDF. Reusing it produces properly selectable text and correct page breaks, rather than shipping a second PDF engine that would bloat the page and handle fonts less reliably.
Will page breaks land in the same places as Word?
Not necessarily. Word paginates using its own layout engine and your printer settings; here the browser repaginates the rendered document. Content and order are preserved, but a page break may shift by a line or two.
Is my document uploaded anywhere?
No. mammoth.js parses the .docx inside your browser tab, so a contract or CV never leaves your device.
Read our full guide: Why Fonts Change When You Convert Word to PDF (and How to Fix It) →
Convert Word docs to PDF - no Microsoft account, no upload.
Files never leave your device. No upload, no account, and free for unlimited use.
Also see: PDF to Word