Home : File Types : NIB File

.NIB File Extension

File TypeInterface Builder User Interface File

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Rare Uncommon Average Common Very Common
CategoryDeveloper Files


This file is saved in a binary format, which requires a specific program to read its contents.

What is a NIB file?

File created by Interface Builder, a software development program (included with Apple Xcode) used for building user interfaces for Mac OS X applications; saves a user interface component such as a window or a view as well as the text fields, buttons, and other interactive components.

More Information

While NIB files aren't required for Mac OS X applications, they are commonly used since creating interfaces visually in Interface Builder is often easier than creating them programmatically.

NOTE: Version 3 of Interface Builder introduced the .XIB format, which stores the same information as a NIB file but uses a text-based file format.

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Programs that open NIB files
Apple Xcode
Apple Interface Builder
Updated 9/20/2011

.NIB Extension Information

This page contains information about the file extension NIB and its known file associations. Our goal is to help you understand what a *.nib file is and how to open it.

The Interface Builder User Interface file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and do not publish any information we have not verified.

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