# Mach-O binary (reverse byte ordering scheme, 32-bit) — file signature CE FA ED FE at offset 0 For Mach-O binary (reverse byte ordering scheme, 32-bit), hex signature is CE FA ED FE; offset is 0, verified against its source on 2026-09-22. - **Hex signature:** CE FA ED FE _(verified: appears in the quote below)_ - **Offset:** 0 _(verified: appears in the quote below)_ - **Format:** Mach-O binary (reverse byte ordering scheme, 32-bit) _(verified: appears in the quote below)_ ## What the source says > CE FA ED FE | Îúíþ | 0 | | Mach-O binary (reverse byte ordering scheme, 32-bit) [33] | ## Source - https://en.wikipedia.org/wiki/List_of_file_signatures Last verified: 2026-09-22. Review by: 2027-09-22. Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).