What is a .DOCX file?

A .DOCX file is a Microsoft Word Open XML Document associated with Documents. Zip-compressed XML document format created by Microsoft Word.

How do I open a .DOCX file on Windows or Mac?

You can open .DOCX files using Microsoft Word 365, Google Docs, LibreOffice Writer, Apple Pages. If you do not have native software installed, you can use OpenAnyFile's free File Identifier or convert .DOCX to a standard format in your browser.

Is a .DOCX file safe to open?

This format carries a safety rating of Low Risk. Standard DOCX files cannot contain macros (DOCM format handles macros). Low risk.

Can I convert a .DOCX file to other formats?

Yes! .DOCX can be converted to formats such as .PDF, .TXT directly in your web browser.

What should I do if a .DOCX file is corrupted or won't open?

If your .DOCX file displays an invalid header or signature error, check its magic bytes hex header (50 4B 03 04 (PK.. Zip archive)) using OpenAnyFile's Magic Byte Detector or follow our step-by-step file repair guide.

Documents • MIME: application/vnd.openxmlformats-officedocument.wordprocessingml.document

.DOCX – Microsoft Word Open XML Document

Zip-compressed XML document format created by Microsoft Word.

Primary Category Documents

MIME Type application/vnd.openxmlformats-officedocument.wordprocessingml.document

Magic Bytes Signature 50 4B 03 04 (PK.. Zip archive)

Security Risk Rating Low Risk

Recommended Software to Open .DOCX

Microsoft Word 365

windows, mac, android, ios • Commercial

Google Docs

windows, mac, linux, android, ios • Free

LibreOffice Writer

windows, mac, linux • Free

Apple Pages

mac, ios • Free