Word to PDF Converter
Convert a Word (.docx) document into a clean PDF without leaving your browser. The document is never uploaded — parsing and page layout happen entirely on your device, and the resulting PDF keeps its text selectable.
Limits: up to 50 MB. Files are processed in your browser and never uploaded.
Your file is processed locally in your browser and is not uploaded to BurnJet. Nothing about the document (contents, name or metadata) is sent anywhere.
How to use it
- 1
Add your .docx
Drag a Word file onto the drop zone or browse for it. The file stays on your device.
- 2
Convert
BurnJet reads the document structure and lays it out into PDF pages in a background worker.
- 3
Download the PDF
Save the PDF. The text stays selectable and searchable. Use "Convert another" to start over.
How the conversion works
- The .docx is unzipped and read with the open-source "mammoth" library, which produces a semantic HTML representation of the document.
- That HTML is walked into a lightweight structure: headings, paragraphs, list items, tables, images and page breaks, each with bold/italic runs. Only text is read — no HTML is rendered, so there is no injection risk.
- The structure is sent to a Web Worker, which uses the open-source "pdf-lib" library to lay out A4 pages: word-wrapping text, drawing table grids, embedding PNG/JPEG images and inserting page breaks.
- The finished PDF is returned as a Blob for download. Text is drawn as real glyphs, so it stays selectable and searchable.
Limitations & privacy
- Only .docx is supported. Legacy .doc, .rtf, .odt and Pages files are rejected.
- A standard Helvetica-style font family is embedded. Custom fonts are substituted and some non-Latin characters may be simplified.
- Exact margins, colours, headers/footers, footnotes and advanced layout are approximated, not reproduced 1:1.
- Very large documents may hit the size limit or the 90-second safety timeout.
- The file, its name and its contents never leave your browser and are not written to any database or storage.
Frequently asked questions
Is my document uploaded anywhere?
No. The .docx is read and converted entirely in your browser with a Web Worker. No network request carries the file, its name or its contents, and nothing is stored.
Does the PDF keep selectable text?
Yes. The converter draws real text into the PDF (not a screenshot), so the output stays selectable, searchable and lightweight.
What formatting is preserved?
Headings, paragraphs, bold and italic, bulleted and numbered lists, simple tables, inline images and explicit page breaks. Exact fonts, colours, margins and advanced layout are approximated.
Can it open old .doc files?
No. Only the modern .docx format (Word 2007 and later) is supported. Legacy binary .doc files are rejected — re-save them as .docx first.
Why does my PDF use a standard font instead of my document font?
Browser-side PDF generation embeds a standard Helvetica-style font family. Custom or non-Latin fonts are substituted, and characters outside the Latin-1 range may be simplified.
Is there a size limit?
Yes. The limit is set by the site administrator and capped by a hard safety ceiling. The current effective limit is shown above the drop zone.