http://fileformats.archiveteam.org/wiki/ZIP

Main Type: application/zip ✓
Extension: .zip

Type Parameters

• x-join-parts❌ (optional): If this is a multi-part archive that has been joined together from application/x-joinable parts, this will be a comma-separated list of byte lengths for each part of the file, in order.

Splits to

If this is a single-part archive:

• ZIP Chunks (chunk/zip ❌)

If this is the final part of a multi-part archive:

• application/x-joinable; to=application/zip; order=[number]; final=true ❌
  (...where [number] will be the total number of parts in the archive, minus 1.)

Join Extensions

• .z00: application/x-joinable; to=application/zip; order=0
• .z01: application/x-joinable; to=application/zip; order=1
• (...)
• .z98: application/x-joinable; to=application/zip; order=98
• .z99: application/x-joinable; to=application/zip; order=99

Chunks

Chunk Type: chunk/zip ❌

Use the which parameter to determine the chunk subtype:

Chunk: trailer

Chunk: central

Chunk: local

Splits to:

If this is an uncompressed/unencrypted record, one of the following:

• JPEG (image/jpeg ✓)
• ...a data type looked up from Central Dispatch by file extension ('application/octet-stream` if the extension is not listed)

If this is a compressed/encrypted record, one of the following (very likely to be "Deflated"):

• Deflated (application/x-deflated ❌)
• Deflate64'd (application/x-deflated; variant=deflate64 ❌)
• LZW Shrunk (application/x-lzw; variant=shrink ❌)
• Reduced, Factor 1 (application/x-reduced; factor=1 ❌)
• Reduced, Factor 2 (application/x-reduced; factor=2 ❌)
• Reduced, Factor 3 (application/x-reduced; factor=3 ❌)
• Reduced, Factor 4 (application/x-reduced; factor=4 ❌)
• Imploded (IBM Terse) (application/x-ibm-terse; variant=implode ❌)
• DCL Imploded (IBM Terse) (application/x-ibm-terse; variable=dcl-implode ❌)
• bzip2 (application/x-bzip2 ❌)
• lzma (application/x-lzma ❌)

• IBM Terse (application/x-ibm-terse; variant=new ❌)

• lz77 (application/x-lz77 ❌)
• wavpack (audio/x-wavpack ❌)
• ppmd (application/x-ppmd; version=i; rev=1 ❌)

• AES (application/x-aes ❌)

...with an additional type parameter: from, which will be set to a type name (percent-encoded if necessary) looked up from Central Dispatch by file extension. If the extension is not listed, from will either be set to application/octet-stream, or not be set at all.