## 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 Office Open XML (DOCX, PPTX and XLSX), Open Document (ODB, ODC, ODF, ODG, ODI, ODP, ODS and ODT), iWork (KEY, PAGES, NUMBERS), and Capture One Enhanced Image Package (EIP). The ExifTool family 3 groups may be used to organize the output by embedded document number (ie. the exiftool `-g3` option).

> Index2 | Tag Name | Writable | Values / 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.

> Index1 | Tag Name | Writable | Values / 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 |

## ZIP RAR Tags

These tags are extracted from RAR archive files.

> Index1 | Tag Name | Writable | Values / Notes
> --- | --- | --- | ---
> 0 | CompressedSize | N |
> 4 | UncompressedSize | N |
> 8 | OperatingSystem | N | 0 = MS-DOS 1 = OS/2 2 = Win32 3 = Unix
> 13 | ModifyDate | N |

> 18

> PackingMethod

> N

> 0x30 = Stored 0x31 = Fastest 0x32 = Fast |  | 0x33 = Normal 0x34 = Good Compression 0x35 = Best Compression |

> 25 | ArchivedFileName | N |

(This document generated automatically by Image::ExifTool::BuildTagLookup)
Last revised Aug 24, 2011

<-- ExifTool Tag Names