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)

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

Modern 7-Zip fully supports Unicode, but if the archive was created with an old tool using SJIS, it needs special handling.

A file containing Japanese characters often results in garbled file names (mojibake) when extracted on a system not set to Japanese locale. This happens because the archive likely uses an old non-Unicode character encoding (like Shift-JIS/Code Page 932) to store filenames.

If you need to extract many such files, temporarily change your Windows system locale to Japanese. Go to > Clock and Region > Region . Click the Administrative tab. Click Change system locale... and select Japanese (Japan) .

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Japanese.7z Site

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)

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

Modern 7-Zip fully supports Unicode, but if the archive was created with an old tool using SJIS, it needs special handling. When extracting, you likely see file names appearing as

A file containing Japanese characters often results in garbled file names (mojibake) when extracted on a system not set to Japanese locale. This happens because the archive likely uses an old non-Unicode character encoding (like Shift-JIS/Code Page 932) to store filenames. Summary of 7-Zip Features for Japanese Files Modern

If you need to extract many such files, temporarily change your Windows system locale to Japanese. Go to > Clock and Region > Region . Click the Administrative tab. Click Change system locale... and select Japanese (Japan) .