File extension .BSA
Full Name | Developer | Category |
---|---|---|
Bethesda Softworks Archive Format | Bethesda Softworks | Game Files |
The BSA file extension is used for game archives created by Bethesda Softworks. BSA files store assets such as textures, meshes, and audio files. They are used with games such as Elder Scrolls: Oblivion and Fallout 3.
A BSA file is similar to a normal archive file, but is compressed using a unique method developed by Bethesda Softworks. Since the format is proprietary, most archiving software, such as WinRAR or 7-Zip, cannot extract the contents of a BSA archive. Instead, the only way to find out what is inside a BSA file is to use specific software like BSA Browser.
Advantages of Using BSA Files
Using BSA files to store assets streams those resources during gameplay resulting in faster loading times since the data within the archives is compressed. Additionally, BSA archives also standardize the loading of plugins at start-up. This speeds up the process of loading all plugins in play.
Similar File Extensions
Other popular game-archiving formats include: .VPK, .FPK, and TDPK.
After installing the required software, the operating system will usually automatically associate an unknown file type (in this case .BSA) with the new application. If this does not happen, we can help the system a bit by selecting the software for it, which it should always use to open files with the .BSA extension.
When choosing the software we can select the system to use this software every time.
Remember!
Using it for the first time it is good to check whether the .BSA file opened in the application can be read by us and opens in a way that allows us to use it. If everything is in order, select this option the next time you open a file with the .BSA extension. However, if the file has not opened correctly, we have to look for a different software, with which we can open files with the .BSA extension. Select a different software from our list and install it on your computer. After the software is installed, repeat inspection openings of a .BSA file. Sometimes you have to repeat the operation several times.
Other instructions
If none of the programs listed by us to work with the .BSA file has not meet your expectations, you can try searching other websites. But remember to avoid downloading programs "that can open any file". These applications not only have very limited functionality, but may also expose you to expense tens of dollars when purchasing a license.
In the vast majority of cases you will find the program dedicated to support the .BSA file, or any other file format. In addition, there is a chance that it will be a free program, and its functionality (concerning the .BSA file) will be extended to the maximum.
It is also good to check
- if the .BSA file has no errors
- or if it has been copied (or downloaded by the browser) thoroughly
Author’s guidelines

Mr B. Adam
Author of the guidelines / Founder of FileExtension.info
New technologies enthusiast, helping to solve problems with the files.
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