# 52 49 46 58 ?? ?? ?? ?? 46 47 44 4D (big-endian) — File format magic numbers

For 52 49 46 58 ?? ?? ?? ?? 46 47 44 4D (big-endian), offset is 0; extension is dcr; format is Adobe Shockwave, recorded from its source on 2026-08-03.

- **Hex signature:** 52 49 46 58 ?? ?? ?? ?? 46 47 44 4D (big-endian) _(unconfirmed — we could not tie this to the quote below)_
- **Offset:** 0 _(unconfirmed — we could not tie this to the quote below)_
- **Extension:** dcr
- **Format:** Adobe Shockwave

## What the source says

> dcr | <https://en.wikipedia.org/wiki/Adobe_Shockwave> Adobe Shockwave [ 83 ] [ 84 ] [ 85 ]

## 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/).