How to convert DOCX to PDF online
- 1
Drop your DOCX file
Drag your Office Open XML Document file onto the box above, or click it to pick a file.
- 2
Wait a few seconds
Conversion starts on its own and runs on your device, not on a server.
- 3
Download your PDF
Click Download to save the Portable Document Format file.
DOCX vs PDF: format overview
Office Open XML Document
Microsoft · 2007
- Compression
- lossless
- Transparency
- No
- ✓ Fully editable with tracked changes
- ✓ Universal word processor format
- ✗ Layout shifts between apps
Portable Document Format
Adobe Systems (John Warnock) · 1993
- Compression
- lossless
- Transparency
- No
- ✓ Fixed layout — looks identical on every device
- ✓ Embeds fonts, images, and vector graphics
DOCX magic bytes: 50 4B 03 04 (ZIP-based)
PDF magic bytes: 25 50 44 46
Why convert DOCX to PDF?
Word documents are not portable. Open a DOCX on a different machine and the fonts shift, the spacing changes, the layout breaks. Send it to someone on a Mac when you created it on Windows and you'll see it differently than they do. DOCX is a living format — it renders differently depending on the software version, installed fonts, and OS.
PDF is the opposite. A PDF looks identical everywhere — every OS, every browser, every phone, every printer renders it the same way. When you need a document to look exactly as you designed it — for a job application, a proposal, a contract, an invoice, a university assignment — PDF is the only format that actually guarantees that.
This converter keeps your document's structure: headings, bold and italic text, bullet and numbered lists, simple tables and images (PNG, JPEG, GIF and BMP). It sets everything in one clean font on A4 pages. Word's own fonts, colours, page size, headers and footers, columns and text boxes are not copied — if you need an exact copy of the Word layout, use Save as PDF in Word itself.
Common reasons to convert DOCX to PDF:
- ›Submitting a CV, cover letter, or university assignment in a fixed, guaranteed format
- ›Sending a proposal or invoice that looks correct regardless of the recipient's software
- ›Locking a document's formatting before sharing it with a client or colleague
- ›Archiving a document in a format that won't break with future Word or OS updates
Quality & file size: DOCX to PDF
The text in the PDF is real text, not a picture: you can select, copy and search it, and systems that read CVs and forms can read it too.
What comes across: headings, bold and italic, bullet and numbered lists, simple tables with borders, and images. What doesn't: Word's fonts and colours, page size and margins, headers and footers, columns and text boxes. Everything is set in Liberation Sans on A4 pages.
Text in Latin, Greek and Cyrillic scripts converts — in our tests, Lithuanian and Russian text came through correctly. Chinese, Japanese, Korean, Arabic and Hebrew aren't supported yet; you'll see a message instead of a broken PDF. Emoji are left out.
Long documents are fine: a 6-page test document kept all 180 of its paragraphs. Only .docx files work — open an old .doc file in Word and save it as .docx first.
Frequently asked questions
Will my Word formatting be preserved in the PDF?
Can I convert a .doc file?
Does it work with documents in other languages?
How do I convert Word to PDF for free without Microsoft Office?
How do I convert DOCX to PDF on a Mac?
Can I convert a password-protected DOCX to PDF?
Your DOCX file never leaves this tab — FormatDrop has no endpoint that receives file data. How it works