epub

.epub — Electronic Publication

IDPF / W3C · 2007

開発者

IDPF / W3C

カテゴリ

電子書籍

MIMEタイプ

application/epub+zip

初回リリース

2007

オープンフォーマット

はい

ファイルシグネチャ

50 4B 03 04 (PK ZIP)

.epubファイルとは？

EPUB (Electronic Publication) is the most widely supported open e-book format. EPUB files are essentially ZIP archives containing XHTML content, CSS styles, images, and metadata. The format supports reflowable content that adapts to different screen sizes, making it ideal for reading on e-readers, tablets, and smartphones. EPUB supports features like embedded fonts, DRM, fixed layouts, and multimedia content.

.epub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	Calibre	無料
	Adobe Digital Editions	無料
macOS	Apple Books	無料	公式
	Calibre	無料

.epubファイルのよくある問題

⚠️ Cannot open .epub file

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

⚠️ .epub 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 .epub files?▼

.epub files can be opened with several programs. Calibre is one of the most popular choices.

Is .epub a safe file format?▼

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

Can I convert .epub to another format?▼

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

技術詳細

Electronic Publication files use the application/epub+zip MIME type and were first introduced in 2007 by IDPF / W3C. The file can be identified by its signature: 50 4B 03 04 (PK ZIP).

豆知識

Electronic Publication was first released in 2007 by IDPF / W3C

セキュリティ情報

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