# zip file format and formats based on it, such as EPUB, JAR, ODF, OOXML — file signature 50 4B 03 04 50 4B 05 06 (empty archive) 50 4B 07 08 (spanned archive) at offset 0

For zip file format and formats based on it, such as EPUB, JAR, ODF, OOXML, hex signature is 50 4B 03 04 50 4B 05 06 (empty archive) 50 4B 07 08 (spanned archive); offset is 0; extension is zip aar apk docx epub ipa jar kmz maff msix odp ods odt pk3 pk4 pptx usdz vsdx xlsx xpi whl, verified against its source on 2026-09-22.

- **Hex signature:** 50 4B 03 04 50 4B 05 06 (empty archive) 50 4B 07 08 (spanned archive) _(verified: appears in the quote below)_
- **Offset:** 0 _(verified: appears in the quote below)_
- **Extension:** zip aar apk docx epub ipa jar kmz maff msix odp ods odt pk3 pk4 pptx usdz vsdx xlsx xpi whl _(verified: appears in the quote below)_
- **Format:** zip file format and formats based on it, such as EPUB, JAR, ODF, OOXML _(verified: appears in the quote below)_

## What the source says

> 50 4B 03 04 50 4B 05 06 (empty archive) 50 4B 07 08 (spanned archive) | PK␃␄ PK␅␆ PK␇␈ | 0 | zip aar apk docx epub ipa jar kmz maff msix odp ods odt pk3 pk4 pptx usdz vsdx xlsx xpi whl | zip file format and formats based on it, such as EPUB, JAR, ODF, OOXML |

## 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/).