{
 "id": "bzip2",
 "name": "Bzip2",
 "category": "archive",
 "identifiers": {
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   "bzip2"
  ],
  "wikidata": [
   "Q27866052",
   "Q125809176"
  ],
  "mime": [
   "application/x-bzip2"
  ],
  "puid": [
   "x-fmt/268"
  ],
  "magic": [
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    "offset": 0,
    "hex": "177245385090",
    "notes": "File Formats Wiki"
   },
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    "offset": 0,
    "hex": "425a68??314159265359",
    "notes": "BZIP2 Compressed Archive"
   },
   {
    "offset": 0,
    "hex": "425a68"
   }
  ],
  "signatures": [
   {
    "name": "BZIP2 Compressed Archive",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "425a68??314159265359"
     }
    ]
   }
  ]
 },
 "status": "writable",
 "summary": "This is an outline record only, and requires further details, research or authentication to provide information that will enable users to further understand the format and to assess digital preservation risks associated with it if appropriate. If you are able to help by supplying any additional information concerning this entry, please return to the main PRONOM page and select ‘Add an Entry’.",
 "tools": [
  {
   "name": "Adminer",
   "url": "https://www.adminer.org/",
   "reads": false,
   "writes": true,
   "license": "Apache License",
   "open_source": true
  },
  {
   "name": "Advanced Guard for Information Security",
   "url": "http://evc.ctc.com/products/agis/",
   "reads": true,
   "writes": false
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  {
   "name": "ALZip",
   "url": "https://www.altools.co.kr/download/alzip.aspx",
   "reads": true,
   "writes": false,
   "license": "freeware"
  },
  {
   "name": "Apache Tika",
   "url": "https://tika.apache.org",
   "reads": true,
   "writes": false,
   "license": "Apache Software License 2.0",
   "open_source": true
  },
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   "url": "https://www.wikidata.org/wiki/Q963462",
   "reads": true,
   "writes": false
  },
  {
   "name": "B1 Free Archiver",
   "url": "http://www.b1.org/",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "bzip2",
   "url": "https://sourceware.org/bzip2/",
   "reads": true,
   "writes": true,
   "license": "BSD licenses",
   "open_source": true
  },
  {
   "name": "diffoscope",
   "url": "https://diffoscope.org/",
   "reads": true,
   "writes": false
  },
  {
   "name": "GIMP 2.0.2",
   "url": "https://www.wikidata.org/wiki/Q64739349",
   "reads": true,
   "writes": true
  },
  {
   "name": "GIMP 2.2.11",
   "url": "https://www.wikidata.org/wiki/Q64829528",
   "reads": true,
   "writes": false
  },
  {
   "name": "Hachoir",
   "url": "http://hachoir.readthedocs.io/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0",
   "open_source": true
  },
  {
   "name": "libarchive",
   "url": "https://libarchive.org/",
   "reads": true,
   "writes": true,
   "license": "2-clause BSD License",
   "open_source": true
  },
  {
   "name": "ouch",
   "url": "https://crates.io/crates/ouch",
   "reads": true,
   "writes": true,
   "license": "MIT License",
   "open_source": true
  },
  {
   "name": "PhotoRec",
   "url": "http://www.cgsecurity.org/wiki/PhotoRec",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License",
   "open_source": true
  },
  {
   "name": "PuriFile",
   "url": "https://purifile.com",
   "reads": true,
   "writes": false
  },
  {
   "name": "Q1275912",
   "url": "https://peazip.github.io/",
   "reads": true,
   "writes": true,
   "license": "GNU Lesser General Public License, version 3.0 or later",
   "open_source": true
  },
  {
   "name": "Q215051",
   "url": "https://7-zip.org",
   "reads": true,
   "writes": true,
   "license": "GNU Lesser General Public License",
   "open_source": true
  },
  {
   "name": "WinRAR",
   "url": "https://www.rarlab.com/",
   "reads": true,
   "writes": false,
   "license": "proprietary license"
  },
  {
   "name": "WinZip",
   "url": "https://www.winzip.com/",
   "reads": true,
   "writes": false,
   "license": "shareware"
  },
  {
   "name": "Zipeg",
   "url": "http://www.zipeg.com/",
   "reads": true,
   "writes": false,
   "license": "BSD licenses",
   "open_source": true
  }
 ],
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/Bzip2",
   "kind": "wiki"
  },
  {
   "name": "PRONOM x-fmt/268",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/x-fmt/268",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q27866052",
   "url": "https://www.wikidata.org/wiki/Q27866052",
   "kind": "wiki"
  },
  {
   "name": "Wikidata Q125809176",
   "url": "https://www.wikidata.org/wiki/Q125809176",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}