---
type: lookup
id: zip-50-4b-03-04-50-4b-05-06-empty-archive-50-4b-07-08-spanned-archive
asset: file-format-signatures
title: "50 4B 03 04 50 4B 05 06 (empty archive) 50 4B 07 08 (spanned archive) — File format magic numbers"
sources:
  - https://en.wikipedia.org/wiki/List_of_file_signatures
source_quote: "PK␃␄ PK␅␆ PK␇␈ | 0 | zip aar apk docx epub <https://en.wikipedia.org/wiki/.ipa> ipa jar kmz <https://en.wikipedia.org/wiki/Mozilla_Archive_Format> maff msix odp ods odt pk3 pk4 pptx usdz vsdx xlsx <https://en.wikipedia.org/wiki/XPInstall> xpi whl | <https://en.wikipedia.org/wiki/ZIP_(file_format)> zip file format and formats based on it, such as <https://en.wikipedia.org/wiki/EPUB> EPUB , <https://en.wikipedia.org/wiki/JAR_(file_format)> JAR , <https://en.wikipedia.org/wiki/OpenDocument> ODF , <https://en.wikipedia.org/wiki/Office_Open_XML> OOXML"
generated: true
verified: false
harvested: 2026-08-03
stale_after: 2027-08-03
hex_signature: "50 4B 03 04 50 4B 05 06 (empty archive) 50 4B 07 08 (spanned archive)"
offset: "0"
extension: "zip"
format: "zip file format"
unverified_fields: hex_signature
---
**Hex signature:** 50 4B 03 04 50 4B 05 06 (empty archive) 50 4B 07 08 (spanned archive)

**Offset:** 0

**Extension:** zip

**Format:** zip file format

> PK␃␄ PK␅␆ PK␇␈ | 0 | zip aar apk docx epub <https://en.wikipedia.org/wiki/.ipa> ipa jar kmz <https://en.wikipedia.org/wiki/Mozilla_Archive_Format> maff msix odp ods odt pk3 pk4 pptx usdz vsdx xlsx <https://en.wikipedia.org/wiki/XPInstall> xpi whl | <https://en.wikipedia.org/wiki/ZIP_(file_format)> zip file format and formats based on it, such as <https://en.wikipedia.org/wiki/EPUB> EPUB , <https://en.wikipedia.org/wiki/JAR_(file_format)> JAR , <https://en.wikipedia.org/wiki/OpenDocument> ODF , <https://en.wikipedia.org/wiki/Office_Open_XML> OOXML

Source: <https://en.wikipedia.org/wiki/List_of_file_signatures>