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.

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 |

— en.wikipedia.org, retrieved 2026-09-22

Source

• en.wikipedia.orghttps://en.wikipedia.org/wiki/List_of_file_signatures

Last verified against source: 2026-09-22. Due for re-check by 2027-09-22. This page as Markdown · OKF bundle · full dataset as JSON.