APINOTES file format description

Many people share .apinotes files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .apinotes file can be edited, converted or printed with. On this page, we try to provide assistance for handling .apinotes files.

1 filename extension(s) found in our database.

.apinotes - Swift Objective-C API Note

The APINOTES development files are related to Swift. The APINOTES file is a Swift Objective-C API Note. Swift is a multi-paradigm, compiled programming language developed by Apple for iOS and OS X development.

Development files
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Swift Objective-C API Note related extensions:
Swift Source Code

Naturally, other applications may also use the .apinotes file extension. Even harmful programs can create .apinotes files. Be especially cautious with .apinotes files coming from an unknown source!

Can't open a .apinotes file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:


To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

Operating systems

DataTypes.net currently supports the following operating systems:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.


If you have useful information about the .apinotes file format, then write to us!

DataTypes.net >> APINOTES file