ZIP Tags

The following tags are extracted from ZIP archives. ExifTool also extracts additional meta information from compressed documents inside some ZIP-based files such as DOCX, PPTX, XLSX (Office Open XML) and EIP (Capture One Enhanced Image Package). The ExifTool family 3 groups may be used to organize the output by embedded document number (ie. the exiftool -g3 option).

IndexTag Name WritableValues / Notes
2 ZipRequiredVersion N  
3 ZipBitFlag N  
4 ZipCompression N 0 = None
1 = Shrunk
2 = Reduced with compression factor 1
3 = Reduced with compression factor 2
4 = Reduced with compression factor 3
5 = Reduced with compression factor 4
6 = Imploded
7 = Tokenized
8 = Deflated
9 = Enhanced Deflate using Deflate64(tm)
10 = Imploded (old IBM TERSE)
12 = BZIP2
14 = LZMA (EFS)
18 = IBM TERSE (new)
19 = IBM LZ77 z Architecture (PFS)
96 = JPEG recompressed
97 = WavPack compressed
98 = PPMd version I, Rev 1
5 ZipModifyDate N  
7 ZipCRC N  
9 ZipCompressedSize N  
11 ZipUncompressedSize N  
15 ZipFileName N  

ZIP GZIP Tags

These tags are extracted from GZIP (GNU ZIP) archives, but currently only for the first file in the archive.

IndexTag Name WritableValues / Notes
2 Compression N 8 = Deflated
3 Flags N Bit 0 = Text
Bit 1 = CRC16
Bit 2 = ExtraFields
Bit 3 = FileName
Bit 4 = Comment
4 ModifyDate N  
8 ExtraFlags N 0 = (none)
2 = Maximum Compression
4 = Fastest Algorithm
9 OperatingSystem N 0 = FAT filesystem (MS-DOS, OS/2, NT/Win32)
1 = Amiga
2 = VMS (or OpenVMS)
3 = Unix
4 = VM/CMS
5 = Atari TOS
6 = HPFS filesystem (OS/2, NT)
7 = Macintosh
8 = Z-System
9 = CP/M
10 = TOPS-20
11 = NTFS filesystem (NT)
12 = QDOS
13 = Acorn RISCOS
255 = unknown
10 ArchivedFileName N  
11 Comment N  

(This document generated automatically by Image::ExifTool::BuildTagLookup)
Last revised Nov 5, 2009

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