NIB File Format

Unknown

markup

The NIB file format is used by Interface Builder, a software development application for Apple's Mac OS X operating system. The NIB objects are stored as an XML property list, they are unpackaged upon running an application.

Identify it

Extensions	`.nib`
Signatures	`3c3f786d6c2076657273696f6e3d` at byte 0 (NIB File Format) `3c3f786d6c2076657273696f6e3d22312e302220656e636f64696e673d225554462d38223f3e0a3c21444f435459504520706c69737420` at byte 0
PRONOM	`fmt/983`
Wikidata	`Q50375236`

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Open it

Interface Builderreads and writes

Convert it

No conversion recorded. One of the tools above may export it; search for a chain.

Sources

PRONOM fmt/983
Wikidata Q50375236

From PRONOM, Wikidata. Updated 2026-10-20.

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