# Lepton compressed JPEG image — file signature CF 84 01 at offset 0 For Lepton compressed JPEG image, hex signature is CF 84 01; offset is 0; extension is lep, verified against its source on 2026-09-22. - **Hex signature:** CF 84 01 _(verified: appears in the quote below)_ - **Offset:** 0 _(verified: appears in the quote below)_ - **Extension:** lep _(verified: appears in the quote below)_ - **Format:** Lepton compressed JPEG image _(verified: appears in the quote below)_ ## What the source says > CF 84 01 | Ï„␁ | 0 | lep | Lepton compressed JPEG image [68] | ## 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/).