A useful feature of using or 7-Zip for these files is the "Extract to [Folder Name]" function. Why this feature is useful:
: The extraction process will alert you if a file is corrupted or if a piece of a multi-part download is missing, preventing you from trying to install a broken file on your Switch.
(often seen as part of a game or homebrew download) is a compressed archive that must be extracted before your console can use the contents.
: It creates a new folder with the same name as the archive, keeping your Switch SD card root clean instead of scattering files everywhere.