---
type: lookup
id: slob-21-2d-31-53-4c-4f-42-1f
asset: file-format-signatures
title: "21 2D 31 53 4C 4F 42 1F — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "/wiki/Windows_Imaging_Format> Windows Imaging Format file | 21 2D 31 53 4C 4F 42 1F | !-1SLOB␟ | 0 | slob | Slob (sorted list of <https://en.wikipedia.org/wiki/Object_storage> Object storages ) is a read-only, compressed data store with dictionary-like interface [ 94 ] | AC ED | ¬í | 0 | | Serialized Java Data [ 95 ] | 43 72 65 61 74 69 76 65 20 56 6F 69 63"
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "21 2D 31 53 4C 4F 42 1F"
offset: "21"
extension: "slob"
format: "Slob (sorted list of Object storages ) is a read-only, compressed data store with dictionary-like interface"
---
**Hex signature:** 21 2D 31 53 4C 4F 42 1F

**Offset:** 21

**Extension:** slob

**Format:** Slob (sorted list of Object storages ) is a read-only, compressed data store with dictionary-like interface

> /wiki/Windows_Imaging_Format> Windows Imaging Format file | 21 2D 31 53 4C 4F 42 1F | !-1SLOB␟ | 0 | slob | Slob (sorted list of <https://en.wikipedia.org/wiki/Object_storage> Object storages ) is a read-only, compressed data store with dictionary-like interface [ 94 ] | AC ED | ¬í | 0 | | Serialized Java Data [ 95 ] | 43 72 65 61 74 69 76 65 20 56 6F 69 63 

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