Version 19 and later have improved handling of Japanese half-width kana, reducing the occurrence of garbled text.
If the archive is a .zip containing Japanese characters, sometimes WinRAR handles it better, though 7-Zip is preferred for actual .7z formats. 3. Summary of 7-Zip Features for Japanese Files Japanese.7z
When extracting, you likely see file names appearing as ? , テスト , or other junk characters. This is because your system is interpreting the Shift-JIS encoding as standard Unicode (UTF-8) or ASCII. 2. Solutions for Extraction Method A: Using 7-Zip Command Line (Recommended) Version 19 and later have improved handling of
7zzs (standalone 7-Zip) can be used without installation. If you tell me: Are you using Windows or macOS/Linux ? Are you using the GUI or Command Line ? I can provide the exact command or steps for your setup. Encrypting and decrypting archives with 7-Zip - Red Hat Summary of 7-Zip Features for Japanese Files When
This is the most reliable method for handling Japanese character encoding directly. Open Command Prompt or Terminal.