Mach-O 32bit

Partly documented

other

Mach-O is a standard used to store programs and libraries on disk in the Apple Mac app binary interface. Mach-O files generally lack a format extension.

Identify it

Signatures	`feedface` at byte 0 (Mach-O 32bit 1) `cefaedfe` at byte 0 (Mach-O 32bit 2)
PRONOM	`fmt/692`
Wikidata	`Q47524710`

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Open it

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ZigOpen sourcewrites · MIT License
ExifToolOpen sourcereads · Artistic License / GNU General Public License, version 1.0 or later

Convert it

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Documentation

kaitai grammar: https://github.com/kaitai-io/kaitai_struct_formats/blob/master/executable/mach_o.ksy

Sources

Kaitai Struct: mach_o
PRONOM fmt/692
Wikidata Q47524710

From Kaitai Struct format gallery, PRONOM, Wikidata. Updated 2026-10-24.

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