: Standard 7z archives begin with the magic bytes 37 7A BC AF 27 1C in hex. If the file doesn't open, checking these headers is the first step in troubleshooting a corrupted archive.

: If you don't want to install software, tools like ezyZip or Extract.me allow you to upload and view the archive's contents in your browser. Forensic & Technical Analysis

: If the file is encrypted (AES-256), you will be prompted for a password. Forensic tools like FTK Imager or Exiftool may not show internal metadata unless the archive is decrypted first.

: Right-click the file, select 7-Zip > Open archive . This allows you to browse the images or folders inside as if they were in a normal folder.

: You can often right-click and select "Open with" > Windows Explorer to see the files.