.DOCX File Extension
Full form: Document XML (Microsoft Word Document)
What is a .docx file?
The default Word file format since Word 2007. It stores text, images and styles in a zipped XML package. Files that end with .docx belong to the document family of file types, so your computer links them with a suitable program automatically.
Where is .docx used?
Letters, assignments, reports, resumes and application forms. Because the format is so common, almost every modern device and software understands it.
Examples of .docx file names
resume.docx, project.docx
How to open a .docx file
You can open it with: Microsoft Word, LibreOffice, Google Docs. If it does not open, check that the file is not damaged and that you have downloaded it fully; also confirm that the extension was not renamed by mistake.
Quick tips
Never rename a file just to change its extension, because that does not convert the data inside. Use a proper converter or the Save As / Export option. Keep a backup copy of important document files before editing them.