---
type: lookup
id: duck-44-55-43-4b
asset: file-format-signatures
title: "44 55 43 4b — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "44 55 43 4b | DUCK | 8 | | <https://en.wikipedia.org/wiki/DuckDB> DuckDB database file (source: <https://github.com/duckdb/duckdb/blob/main/src/include/duckdb/storage/storage_info.hpp#L69> Source code ) |"
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "44 55 43 4b"
offset: "8"
extension: "duck"
format: "DuckDB database file"
---
**Hex signature:** 44 55 43 4b

**Offset:** 8

**Extension:** duck

**Format:** DuckDB database file

> 44 55 43 4b | DUCK | 8 | | <https://en.wikipedia.org/wiki/DuckDB> DuckDB database file (source: <https://github.com/duckdb/duckdb/blob/main/src/include/duckdb/storage/storage_info.hpp#L69> Source code ) |

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