How do I decode a file with a .sit or .sea extension?

A file with the .sit extension is an archive compressed with the StuffIt format; use StuffIt Expander to unstuff the file. With Mac OS 7.x-9.x or Mac OS X, drag and drop the file onto the StuffIt Expander icon and it will decompress, explode, and when necessary, decode the file into a usable form. If dragging and dropping doesn't work, then double-click the StuffIt Expander icon. From the File menu, select Expand, then choose the file you wish to convert. Make sure you have the most recent StuffIt Expander release, as older releases may not be able to open newer versions of the StuffIt format.

Often, files with the .sea extension have also been compressed with the StuffIt format, but they are self-extracting archives. If you are using Mac OS or Mac OS X, simply double-click them to unstuff them.

StuffIt files downloaded from the Internet or received via email will typically be encoded with MacBinary or BinHex. StuffIt Expander will be able to remove this encoding as well.

Most applications will usually pass off any file with the .sit or .sea extension to StuffIt Expander, which will expand and decode it automatically.

Also see:

• For Mac OS and Mac OS X, what programs are available to make and decode tar archives?
• What is MacBinary, and how can I decode it?
• In Mac OS and Mac OS X, how do I compress and archive folders, files, and applications with StuffIt?
• What is StuffIt, and how do I decode Stuffed archives?
• In Mac OS and Mac OS X, how do I use StuffIt products to decode encoded files and expand compressed files?
• What is StuffIt Expander, and where can I get it?