# FreeArc file — file signature 41 72 43 at offset 0

For FreeArc file, hex signature is 41 72 43; offset is 0; extension is arc cdx, verified against its source on 2026-09-22.

- **Hex signature:** 41 72 43 _(verified: appears in the quote below)_
- **Offset:** 0 _(verified: appears in the quote below)_
- **Extension:** arc cdx _(verified: appears in the quote below)_
- **Format:** FreeArc file _(verified: appears in the quote below)_

## What the source says

> 41 72 43 | ArC | 0 | arc cdx | FreeArc file |

## 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/).