# 66 74 79 70 63 72 78 43 52 — File format magic numbers

For 66 74 79 70 63 72 78 43 52, offset is 0; extension is cr3; format is Canon RAW Format Version 3, recorded from its source on 2026-08-03.

- **Hex signature:** 66 74 79 70 63 72 78 43 52
- **Offset:** 0
- **Extension:** cr3
- **Format:** Canon RAW Format Version 3 _(unconfirmed — we could not tie this to the quote below)_

## What the source says

> sion 2 [ 12 ] Canon's RAW format is based on TIFF. [ 13 ] | 66 74 79 70 63 72 78 43 52 | ftypcrx | 0 | cr3 | 80 2A 5F D7 | €*_× | 0 | cin | <https://en.wikipedia.org/wiki/Eastman_Kodak> Kodak <https://en.wikipedia.org/wiki/Cineon#Cineon_file_format> Cineon image | 52 4E 43 01 52 4E 43 02 | RNC␁ RNC␂ | 0 | | Compressed file using Rob Northen Compression (vers

## 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/).