Files with sit extension can be mainly found as compressed archives in special StuffIt Expander archive format. Mostly encountered on Mac platform.

There are 3 other file types using
the SIT file extension!

empty icon.sit - IRT Cronista infrared image file

empty icon.sit - PDP-10 Fortran-77 compiler source file

empty icon.sit - Sinclair ZX Spectrum emulator snapshot

Detailed description

Software that open sit file

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SIT file extension - StuffIt archive format

What is sit file? How to open sit files?

File type specification:

Archive and compressed file type icon Archive and compressed file type

sit file icon: sit filetype icon

File extension sit is used for StuffIt Expander archive format, that is mainly used on Mac. StuffIt Expander works also under Windows OS.

StuffIt incorporates the functionality of StuffIt Expander, DropStuff, DropZip, and DropTar into one convenient program which can create and access email attachments and downloads, protect data, and transfer files.

The sit file contains compressed Stuffit Expander archive.

MIME types:
application/x-stuffit
application/x-sit

Updated: November 28, 2023

The default software associated to open sit file:

StuffIt Deluxe icon

Smith Micro Software, Inc. logoStuffIt Deluxe  Microsoft Windows software

Company or developer:
Smith Micro Software, Inc.

StuffIt Deluxe is commercial compression utility, that supports about 25 archive formats such as ZIP, GZIP, SIT etc.. StuffIt has also integrated own SIF StuffIt Image Format used to compress picture images. StuffIt Deluxe is available for Microsoft Windows and Mac OS X.

StuffIt Deluxe for Mac icon

Smith Micro Software, Inc. logoStuffIt Deluxe for Mac  Apple macOS / Mac OS X software

Company or developer:
Smith Micro Software, Inc.

StuffIt Deluxe for Mac is utility used to backup, share, archive, encrypt and shrink photos, music, and other documents. It supports variety of archive and compression file formats.

StuffIt for Mac icon

Smith Micro Software, Inc. logoStuffIt for Mac  Apple macOS / Mac OS X software

Company or developer:
Smith Micro Software, Inc.

StuffIt for Mac is archive utility that is able to create ZIP and SITX archives as well as extract 25 different formats including StuffIt, Zip, RAR and Tar.

Help how to open:

Use StuffIt Expander to open and decode the *.sit file.

How to convert:

Use WinZip to repack *.sit files to another compression format.

Find conversions from sit file:

sit to 1

sit to zip

Find converter to sit file type:

is2 to sit

sitx to sit

File identification strings:

HEX code: 53 74 75 66 66 49 74 20 28 63 29 31 39 39 37 2D
ASCII code: SIT!

List of software applications associated to the .sit file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open sit file, edit sit file, convert sit file, view sit file, play sit file etc. (if exist software for corresponding action in File-Extensions.org's database).

Hint:
Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting sit files.

Software that open sit file - StuffIt archive format

Programs supporting the exension sit on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about listed programs for open sit file action.

Microsoft Windows:

Main software associated with sit file by default:
StuffIt Deluxe small icon StuffIt Deluxe
Other suggested software:
Stuffit small icon Stuffit

Apple macOS / Mac OS X:

Main software associated with sit file by default:
StuffIt Deluxe for Mac small icon StuffIt Deluxe for Mac
StuffIt for Mac small icon StuffIt for Mac

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