{
 "id": "mhtml",
 "name": "MHTML",
 "category": "archive",
 "identifiers": {
  "extensions": [
   "mhtml",
   "mht"
  ],
  "mime": [
   "multipart/related",
   "message/rfc822"
  ],
  "puid": [
   "x-fmt/429"
  ],
  "wikidata": [
   "Q954199"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "46726f6d3a20"
   }
  ],
  "signatures": [
   {
    "name": "MHT",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "max_offset": 2048,
      "pattern": "4d(494d45|696d65)2d(56|76)657273696f6e3a20312e30{1-2}436f6e74656e742d547970653a206d756c7469706172742f72656c61746564"
     }
    ]
   }
  ],
  "priority_over": [
   "fmt/99",
   "fmt/100",
   "fmt/278",
   "fmt/471"
  ]
 },
 "status": "writable",
 "summary": "AKA MIME Encapsulation of Aggregate Documents, such as HTML. This entry was previously named 'Microsoft Web Archive', however MHTML is not specific to Microsoft. MHTML is described by the IETF standard RFC2557.",
 "tools": [
  {
   "name": "AbiWord",
   "url": "https://www.wikidata.org/wiki/Q136775",
   "reads": false,
   "writes": true,
   "license": "GNU General Public License, version 2.0 or later",
   "open_source": true
  },
  {
   "name": "Microsoft Office Excel 2007",
   "url": "https://www.wikidata.org/wiki/Q10329635",
   "reads": false,
   "writes": true
  },
  {
   "name": "Microsoft Office Publisher 2003",
   "url": "https://www.wikidata.org/wiki/Q63385386",
   "reads": true,
   "writes": false
  },
  {
   "name": "Microsoft Office Publisher 2007",
   "url": "https://www.wikidata.org/wiki/Q46049862",
   "reads": true,
   "writes": true
  },
  {
   "name": "Microsoft Office Word 2007",
   "url": "https://www.wikidata.org/wiki/Q19683982",
   "reads": false,
   "writes": true
  },
  {
   "name": "Microsoft PowerPoint 2007",
   "url": "https://www.wikidata.org/wiki/Q46049299",
   "reads": false,
   "writes": true
  },
  {
   "name": "Opera",
   "url": "https://www.opera.com",
   "reads": true,
   "writes": false
  },
  {
   "name": "Supermium",
   "url": "https://win32subsystem.live/supermium/",
   "reads": true,
   "writes": false,
   "license": "3-clause BSD License",
   "open_source": true
  },
  {
   "name": "WPS Spreadsheet 2013",
   "url": "https://www.wikidata.org/wiki/Q111676971",
   "reads": true,
   "writes": true
  },
  {
   "name": "WPS Writer 2013",
   "url": "https://www.wikidata.org/wiki/Q111673914",
   "reads": true,
   "writes": true
  }
 ],
 "projects": [
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/MHTML",
   "kind": "wiki"
  },
  {
   "name": "PRONOM x-fmt/429",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/x-fmt/429",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q954199",
   "url": "https://www.wikidata.org/wiki/Q954199",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "ffw",
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-24",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "conversions": [],
 "samples": [],
 "claims": [],
 "verification": []
}