# 46 4F 52 4D ?? ?? ?? ?? ANBM — File format magic numbers

For 46 4F 52 4D ?? ?? ?? ?? ANBM, offset is 0 any; extension is anbm iff; format is IFF Animated Bitmap, recorded from its source on 2026-08-03.

- **Hex signature:** 46 4F 52 4D ?? ?? ?? ?? ANBM _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0 any _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** anbm iff _(unconfirmed — we could not tie this to the quote below)_
- **Format:** IFF Animated Bitmap

## What the source says

> <https://en.wikipedia.org/wiki/Interchange_File_Format> IFF <https://en.wikipedia.org/wiki/IFF_Animated_Bitmap?action=edit&redlink=1> Animated Bitmap

## Source

- https://en.wikipedia.org/wiki/List_of_file_signatures

Last verified: 2026-08-03. Review by: 2027-08-03.
Part of [File format magic numbers](https://referencesource.org/file-format-signatures/).