Format guide
DOCX
Microsoft Word Document
DOCX is the file format Microsoft Word has used since 2007, a zip containing XML, images, and styles. It replaced the older binary .doc format and is now the de facto standard for editable documents. Google Docs, Apple Pages, and LibreOffice all read and write DOCX, though formatting fidelity varies for complex layouts (tables, embedded objects, custom styles).
How to open a DOCX file
Microsoft Word (paid), Google Docs (free, web), Apple Pages (free, macOS/iOS), LibreOffice (free, all platforms), or any modern web-based editor like OnlyOffice.
Primary use
Editable text documents; the de facto office document standard.
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