# MPEG-1 Layer 3 file without an ID3 tag or with an ID3v1 tag (which is appended at the end of the file) — file signature FF FB FF F3 FF F2 at offset 0

For MPEG-1 Layer 3 file without an ID3 tag or with an ID3v1 tag (which is appended at the end of the file), hex signature is FF FB FF F3 FF F2; offset is 0; extension is mp3, verified against its source on 2026-09-22.

- **Hex signature:** FF FB FF F3 FF F2 _(verified: appears in the quote below)_
- **Offset:** 0 _(verified: appears in the quote below)_
- **Extension:** mp3 _(verified: appears in the quote below)_
- **Format:** MPEG-1 Layer 3 file without an ID3 tag or with an ID3v1 tag (which is appended at the end of the file) _(verified: appears in the quote below)_

## What the source says

> FF FB FF F3 FF F2 | ÿû ÿó ÿò | 0 | mp3 | MPEG-1 Layer 3 file without an ID3 tag or with an ID3v1 tag (which is appended at the end of the 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/).