50 4B 03 04
ZIP archive
Local file header signature of a ZIP archive — "PK" after Phil Katz. Also the container signature of DOCX/XLSX/JAR/APK and other ZIP-based formats.
Similar magic numbers
| value | name | category |
|---|---|---|
| 50 4B 03 04 0A 00 02 00 | Open Publication Structure eBook | file-signature |
| 50 4B 03 04 14 00 08 00 | Java archive | file-signature |
| 50 4B 03 04 14 00 01 00 | ZLock Pro encrypted ZIP | file-signature |
| 50 4B 03 04 14 00 06 00 | MS Office 2007 documents | file-signature |
| 50 4B 05 06 | PKZIP archive | file-signature |