# Photoshop Document file, Adobe Photoshop's native file format — file signature 38 42 50 53 at offset 0 For Photoshop Document file, Adobe Photoshop's native file format, hex signature is 38 42 50 53; offset is 0; extension is psd, verified against its source on 2026-09-22. - **Hex signature:** 38 42 50 53 _(verified: appears in the quote below)_ - **Offset:** 0 _(verified: appears in the quote below)_ - **Extension:** psd _(verified: appears in the quote below)_ - **Format:** Photoshop Document file, Adobe Photoshop's native file format _(verified: appears in the quote below)_ ## What the source says > 38 42 50 53 | 8BPS | 0 | psd | Photoshop Document file, Adobe Photoshop's native file 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/).