The .7z extension represents a high-compression, open-source archive format managed primarily by 7-Zip software, offering superior compression ratios via LZMA/LZMA2, AES-256 encryption, and support for massive archive sizes. While Windows 11 provides native support, the official 7-Zip application offers advanced features like solid compression, self-extracting archives, and robust command-line operations. For the official tool and documentation, visit 7-Zip .
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