Free · No sign-up · Runs in your browser

Convert Word to PDF.

Turn a .docx file into a PDF that looks right and opens anywhere — without a single document ever leaving your device.

Not uploaded — nobody sees it Keeps headings & formatting No watermark, ever No subscription or account
Your file is never uploaded — it’s processed right here in this browser tab, on your device. There’s no server involved, so we never see it, copy it or keep it.
How it works

Three steps, no waiting on a server

Altto's Word to PDF tool works right in your browser tab, so there's no upload queue and no “processing your file” spinner tied to someone else's servers.

01

Add your document

Drop in a .docx file.

02

Convert

Altto rebuilds the document and lays it out as a PDF, locally.

03

Save your PDF

Get back a PDF version, ready to share or print.

Why this runs in your browser, not on a server

Word documents are often drafts, contracts or things you’d rather not hand to a stranger’s server just to change the file format. Altto skips that step completely — there’s no server for it to go to.

  • Nothing is uploaded, everEvery document is read and converted by code that runs in this browser tab, because there’s no server on the other end. That also means we can’t see it, copy it or keep it.
  • No account, no email wallConvert as many documents as you like without signing up or handing over an email address.
  • Headings and formatting carry overBold, italic, headings and lists are preserved in the PDF layout.
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documents stored on our servers. There’s no server involved at all — the PDF is built once, then everything happens locally.

FAQ

Frequently asked questions

The practical details on what this tool can and can’t do. Need to go the other way? See PDF to Word.

Will my formatting be kept?
Headings, bold/italic text, lists and paragraphs carry over well. Very complex layouts — multi-column text, text boxes, tracked changes — may not look identical in the PDF.
Is my document uploaded anywhere?
No — nothing is ever uploaded. The .docx is read and converted entirely inside this browser tab. There's no server involved at all, so there's nothing for Altto to see, copy or keep.
Does this work with the older .doc format?
Not yet — only the modern .docx format (Word 2007 and later) is supported. Save your file as .docx from Word first if needed.
Can I convert a password-protected document?
No, encrypted Word documents can't be read in the browser. Remove the password in Word first, then convert it here.
Why does the layout shift slightly?
Altto rebuilds the page using web technology rather than Word's own layout engine, so spacing can shift a little on documents with unusual formatting.
Do you keep a copy of my document?
No. There's no upload, so there's nothing on our side to keep. See the Privacy Policy for details.