Why convert Word to PDF at all?
A .docx looks one way on your laptop and a slightly different way on someone else’s. Fonts get swapped. Margins drift. That heading you carefully centered? It wraps onto two lines on a machine that doesn’t have your font installed. PDF kills that problem. Once it’s a PDF, the document looks identical everywhere, on a phone, a print shop’s computer, or a recruiter’s inbox.
So you send the PDF, not the editable file. Cleaner, safer, and nobody accidentally edits your contract.
How the conversion runs
You upload the Word file. On the server, a headless LibreOffice instance opens it, lays out every page the way Word would, and prints the result to PDF. That’s the same engine that powers a lot of “Save as PDF” buttons you’ve used without realizing it. It reads the document structure directly, so paragraphs, tables, bullet lists, headers, footers, page breaks, and embedded images all carry over.
Both .docx (the modern XML format) and the older .doc binary format work. Drop in either one.
What comes through cleanly, and what might shift
Standard documents convert near-perfectly. Body text, headings, tables, numbered lists, hyperlinks, page numbers, images, the stuff 95% of Word files are made of. Those land in the PDF exactly where you’d expect.
A few things to keep an eye on:
- Exotic or licensed fonts. If you used some rare commercial font that LibreOffice can’t access, it substitutes a close match. Common fonts like Calibri, Arial, Times New Roman are fine.
- Macros and form fields. Active content doesn’t survive a PDF conversion, that’s true of any converter. The visible text stays; the interactivity doesn’t.
- Heavily customized templates. Wild multi-column layouts with floating text boxes can shift by a few pixels. For most resumes, reports, and letters, you won’t notice a thing.
Honestly, the only time people see a difference is with elaborate brochure-style files. Plain documents are flawless.
Step by step
- Select your
.docxor.docfile (up to 50 MB). - Hit Convert to PDF.
- Wait a few seconds while the server renders it.
- Download the finished PDF.
That’s the whole thing. No formatting decisions to make, no settings to fiddle with.
A note on your files
The Word file you upload and the PDF that comes out both get wiped automatically about an hour after conversion. They’re not kept, indexed, or read by anyone. If you’re converting something sensitive like a signed agreement or an NDA, that one-hour window is the entire lifespan of your data on the server.
Common questions
Will my fonts look exactly the same?
If you stuck to common system fonts, yes. For rare paid fonts, LibreOffice picks the nearest available substitute, which is usually close enough that nobody notices.
Can I convert an old .doc file from Word 2003?
Yep. The legacy .doc binary format is supported alongside .docx. Same process for both.
Does the PDF stay editable?
No, and that’s the point. A PDF locks the layout so the document can’t be casually altered. If you need to edit, keep your original Word file.
What about tables and images?
Both transfer fully. Tables keep their cell borders and alignment; images stay at their original resolution and position.
Is there a file size limit?
50 MB per file. That’s roughly a 300-page document with images, far more than most people ever need to convert at once.
How long until my file is deleted?
About an hour after conversion. The upload and the output PDF are both removed automatically, so nothing lingers on the server.