: Older versions of extraction tools may be vulnerable to exploits (such as CVE-2025-0411 ) that allow malicious code execution during the extraction process. Ensure you are using the latest version of 7-Zip (currently version 26.01 as of April 2026).
: It can treat multiple files as a single continuous stream, significantly reducing the size of archives containing many similar files.
: The 7z format uses the LZMA and LZMA2 algorithms, which typically offer 30–70% better compression than standard ZIP files.
: It supports strong AES-256 bit encryption , which can protect both the file data and the archive headers (hiding the names of the files inside).