File Extension Database

Open SIT File

SIT file extension is most commonly associated with a StuffIt archive file. SIT files are similar to ZIP or RAR files in that they contain complete file and folder structures in a single, compressed archive. SIT files were originally used exclusively on the Apple platform, though Smith Micro StuffIt is now also available on the Windows platform. Though very uncommon, the SIT file extension may also be used to denote a Sinclair emulator snapshot, or PDP-10 Fortran-77 compiler source code file.

StuffIt was originally developed by Raymond Lau in 1987 to provide a one-step process for archiving and compressing files on Mac, and also offered an improved compression ratio over alternative utilities at the time. Though StuffIt was available as shareware or paid software, in order to make SIT files more widely compatible, a freeware decompression application called StuffIt Expander was released during the 1990's and has since become preloaded as part of the Mac operating system.

Though files on the Mac platform did not require file extensions, StuffIt archives used the SIT file extension so that archives could be stored on other platforms such as Windows and Linux. However, it is possible that the files contained with StuffIt archives contain characters in their names which are fine on the Mac but illegal in Windows, and this may prevent the file being extracted correctly on the latter platform.

SIT files can contain data of any kind, though are conventionally used for backup purposes, or to package files such as applications for distribution over the Internet. However, they could potentially contain malware, so should not be opened, particularly if they are from an unknown source, without checking the archive with an up to date virus scanner.

You can open SIT files using Smith Micro StuffIt or StuffIt Expander on the Mac and Windows platforms. Archives created using the latest StuffIt X compression use the File extension SITX file extension.

How Can I Open SIT File on Windows

We researched and learned that the best way to open SIT file is to find a SIT file in question in Windows OS File Explorer and double click on it to launch the corresponding application.
If a SIT file is not opened in an application and you instead get a "Windows can't open a file" error message you should try looking for an application which can open the file in question.
If you know the application which can open SIT file then run it and see if there is a File->Open main menu option in the application.
If you don't know the application which function as SIT file opener then try to search online for "SIT viewer", "application to open SIT file" or "open SIT file" queries in the search engine you like.
Install the application you found and check if it can open SIT file

How Can I Open SIT File on Mac OS

We recommend to find a SIT file in question in Mac OS Finder and double click on it to launch the corresponding application.
If a SIT file is not opened in a Mac OS application and you instead get a "There is no application set to open the file" error message you can click on "Search App Store" in the error dialog and Mac OS will show you applications compatible with SIT file.
If you know the Mac OS application which can work as SIT file opener you can choose the "Choose Application..." option in the error box to associate the file extension and open SIT file in it.
If you don't know the application which can open SIT file then try to search for "SIT viewer", "application to open SIT file" or "read SIT file" queries in the online search engine you like.
Install the application you found and check if it can read SIT file

How Can I Open SIT File on Android

If you downloaded a SIT file on Android device you can open it by following steps below:

In the Android apps list on your Android device find "My Files" or "File manager" app and tap to start it.
Tap on "Downloads" folder inside the app.
You should see your downloaded SIT file in that folder.
Tap on the file. If Android device supports opening the file you downloaded it will open in the corresponding app.
If file does not open you can look for the corresponding app that can open the file by searching Android App Store for the "SIT".
If you cannot open the file with the apps from Android App Store it is possible that the file could only be opened on desktop platforms such as Windows or Mac OS. Try searching for "SIT viewer", "SIT file reader" online and see if any desktop applications can open it.
It is also possible that the file you downloaded is outdated and is no longer supported.

How to Open SIT File on iPhone or iPad

To open SIT File on iOS device follow steps below:

We advies to open Files app on your iPhone or iPad device. You can find it by swiping down on the home screen and typing "Files" in the search bar.
Tap on the Downloads folder on the Files app home screen.
You will see all files that you recently downloaded. Tap on the SIT file to view it.
If you have the right app that can open it it will automatically launch and open your file.
If you don't have the app which can open it you need to serch Apple app store for "SIT". This way you can find apps which can open SIT files.
If this doesn't help it is possible that your file could be opened only by the desktop application. To find an app which can open it on desktop look for "SIT viewer" or "SIT file" online in your favorite search engine.