---
type: lookup
id: idx-49-4e-44-58
asset: file-format-signatures
title: "49 4E 44 58 — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "<https://en.wikipedia.org/wiki/AmiBack?action=edit&redlink=1> AmiBack <https://en.wikipedia.org/wiki/Amiga> Amiga <https://en.wikipedia.org/wiki/Backup> Backup index file"
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "49 4E 44 58"
offset: "0"
extension: "idx"
format: "AmiBack Amiga Backup index file"
unverified_fields: extension, format, hex_signature, offset
---
**Hex signature:** 49 4E 44 58

**Offset:** 0

**Extension:** idx

**Format:** AmiBack Amiga Backup index file

> <https://en.wikipedia.org/wiki/AmiBack?action=edit&redlink=1> AmiBack <https://en.wikipedia.org/wiki/Amiga> Amiga <https://en.wikipedia.org/wiki/Backup> Backup index file

Source: <https://en.wikipedia.org/wiki/List_of_file_signatures>