.DYLIB File Extension

Mach-O Dynamic Library

Developer Apple
3.9  |  22 Votes

What is a DYLIB file?

A DYLIB file is a Macintosh library that contains declarations and functions referenced by a macOS or iOS application. Programs load DYLIB files dynamically when needed, allowing for efficient memory usage. Apple Xcode users may reference DYLIB files while developing macOS programs.

More Information

DYLIB files are saved in the Mach object, better known as Mach-O, file format. The NeXTSTEP, macOS, and iOS operating systems, which are built upon variants of the Mach kernel, can all load shared functions from DYLIB dynamic libraries.

NOTE: Some .O and .BUNDLE files are also saved in the Mach-O format. These files contain objects, plug-ins, and executable files.

How to open a DYLIB file

DYLIB files are not meant to be opened. Developers may reference DYLIB files when creating applications with Apple Xcode.

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Programs that open or reference DYLIB files


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