# Rich Text Format — file signature 7B 5C 72 74 66 31 at offset 0

For Rich Text Format, hex signature is 7B 5C 72 74 66 31; offset is 0; extension is rtf, verified against its source on 2026-09-22.

- **Hex signature:** 7B 5C 72 74 66 31 _(verified: appears in the quote below)_
- **Offset:** 0 _(verified: appears in the quote below)_
- **Extension:** rtf _(verified: appears in the quote below)_
- **Format:** Rich Text Format _(verified: appears in the quote below)_

## What the source says

> 7B 5C 72 74 66 31 | {\rtf1 | 0 | rtf | Rich Text Format |

## 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/).