docx

.docx — Microsoft Word Open XML Document

Microsoft · 2007

開発者

Microsoft

カテゴリ

ドキュメント

MIMEタイプ

application/vnd.openxmlformats-officedocument.wordprocessingml.document

初回リリース

2007

オープンフォーマット

いいえ

ファイルシグネチャ

50 4B 03 04 (PK ZIP)

.docxファイルとは？

DOCX is the default file format for Microsoft Word documents since Office 2007. It replaced the older .doc format and uses Open XML compression to create smaller, more efficient files. DOCX files can contain formatted text, images, tables, charts, headers, footers, and page formatting. The format is widely supported across word processors including Google Docs, LibreOffice, and Apple Pages.

.docxファイルを開くプログラム

プラットフォーム	プログラム
Windows	Microsoft Word	有料	公式
	LibreOffice Writer	無料
	Google Docs	無料
macOS	Microsoft Word	有料	公式
	Pages	無料

.docxファイルのよくある問題

⚠️ Cannot open .docx file

Install one of the recommended programs listed above. For a free option, try the first free program in the list.

⚠️ .docx file is corrupted

Try re-downloading the file. If the file was transferred, ensure the transfer completed without errors.

よくある質問

What program opens .docx files?▼

.docx files can be opened with several programs. Microsoft Word is one of the most popular choices.

Is .docx a safe file format?▼

Generally yes, .docx files are safe to open with appropriate software.

Can I convert .docx to another format?▼

Yes, there are many online and offline tools available to convert .docx files. Check the conversion section above for specific methods.

技術詳細

Microsoft Word Open XML Document files use the application/vnd.openxmlformats-officedocument.wordprocessingml.document MIME type and were first introduced in 2007 by Microsoft. The file can be identified by its signature: 50 4B 03 04 (PK ZIP).

豆知識

Microsoft Word Open XML Document was first released in 2007 by Microsoft

セキュリティ情報

.docx files are generally safe to open. However, always ensure your software is up to date to protect against potential vulnerabilities.