{
 "id": "portable-grey-map-binary",
 "name": "Portable Grey Map - Binary",
 "family": "netpbm-formats",
 "category": "other",
 "identifiers": {
  "extensions": [
   "pgmb",
   "pgm",
   "pnm"
  ],
  "mime": [
   "image/x-portable-anymap",
   "image/x-portable-graymap"
  ],
  "puid": [
   "fmt/406"
  ],
  "wikidata": [
   "Q28206695"
  ],
  "magic": [
   {
    "offset": 0,
    "hex": "5035",
    "notes": "Portable Grey Map - Binary with comment"
   }
  ],
  "signatures": [
   {
    "name": "Portable Grey Map - Binary with comment",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "5035(20|0d|0a){0-2}23{0-70}0a(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)"
     }
    ]
   },
   {
    "name": "Portable Grey Map - Binary without comment",
    "sequences": [
     {
      "position": "bof",
      "offset": 0,
      "pattern": "5035(20|0d|0a)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)(30|31|32|33|34|35|36|37|38|39|20|0a|0d)"
     }
    ]
   }
  ]
 },
 "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’.",
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  {
   "name": "ACD FotoCanvas Lite",
   "url": "https://www.wikidata.org/wiki/Q116994901",
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   "writes": false
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  {
   "name": "ACDSee 5",
   "url": "https://www.wikidata.org/wiki/Q116957642",
   "reads": true,
   "writes": false
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   "name": "Axialis IconWorkshop",
   "url": "http://www.axialis.com/iconworkshop/",
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   "writes": true
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  {
   "name": "ExifTool",
   "url": "https://exiftool.org/",
   "reads": true,
   "writes": false,
   "license": "Artistic License / GNU General Public License, version 1.0 or later",
   "open_source": true
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  {
   "name": "GIMP",
   "url": "https://gimp.org",
   "reads": true,
   "writes": true,
   "license": "GNU General Public License, version 3.0",
   "open_source": true
  },
  {
   "name": "GQView",
   "url": "https://web.archive.org/web/20230416150038/https://sourceforge.net/projects/geeqie/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0",
   "open_source": true
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  {
   "name": "IrfanView",
   "url": "https://www.irfanview.com/",
   "reads": true,
   "writes": true,
   "license": "freeware"
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  {
   "name": "LibRaw",
   "url": "https://www.libraw.org/",
   "reads": false,
   "writes": true,
   "license": "Common Development and Distribution License version 1.0 / GNU Lesser General Public License, version 2.1",
   "open_source": true
  },
  {
   "name": "LibreOffice Draw",
   "url": "https://www.libreoffice.org/discover/draw/",
   "reads": true,
   "writes": false,
   "license": "Mozilla Public License, version 2.0",
   "open_source": true
  },
  {
   "name": "OpenJPEG",
   "url": "https://www.openjpeg.org",
   "reads": true,
   "writes": false,
   "license": "2-clause BSD 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": "Potrace",
   "url": "https://potrace.sourceforge.net/",
   "reads": true,
   "writes": true,
   "license": "GNU General Public License",
   "open_source": true
  },
  {
   "name": "ImageMagick (WebAssembly)",
   "url": "https://github.com/dlemstra/magick-wasm",
   "license": "Apache-2.0",
   "open_source": true,
   "reads": true,
   "writes": true,
   "via": "netpbm-formats"
  },
  {
   "name": "ABViewer",
   "url": "https://cadsofttools.com/products/abviewer/",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "Converseen",
   "url": "https://converseen.fasterland.net/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 3.0",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "DevIL",
   "url": "http://openil.sourceforge.net/",
   "reads": true,
   "writes": true,
   "license": "GNU Lesser General Public License, version 2.1",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "F-Spot",
   "url": "https://www.wikidata.org/wiki/Q948619",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License / MIT License",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "GDAL",
   "url": "https://gdal.org",
   "reads": true,
   "writes": true,
   "license": "MIT License",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "GIMP 2.0.2",
   "url": "https://www.wikidata.org/wiki/Q64739349",
   "reads": true,
   "writes": true,
   "via": "netpbm-formats"
  },
  {
   "name": "GNU Ocrad",
   "url": "https://www.gnu.org/software/ocrad/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0 or later",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "Image Alchemy",
   "url": "https://www.wikidata.org/wiki/Q28205547",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "JavaView",
   "url": "http://www.javaview.de/",
   "reads": false,
   "writes": true,
   "via": "netpbm-formats"
  },
  {
   "name": "Kakadu",
   "url": "http://www.kakadusoftware.com/",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "Mathematica",
   "url": "https://www.wolfram.com/mathematica/",
   "reads": true,
   "writes": true,
   "license": "proprietary license",
   "via": "netpbm-formats"
  },
  {
   "name": "MediaRich Server",
   "url": "https://equilibrium.com/mediarichserver/",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "Netpbm",
   "url": "http://netpbm.sourceforge.net/",
   "reads": true,
   "writes": true,
   "license": "GNU General Public License, version 2.0",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "OutGuess",
   "url": "https://www.wikidata.org/wiki/Q66671819",
   "reads": false,
   "writes": true,
   "license": "4-clause BSD License",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "PaintShop Pro X4",
   "url": "https://www.wikidata.org/wiki/Q110977057",
   "reads": true,
   "writes": true,
   "via": "netpbm-formats"
  },
  {
   "name": "PaintShop Pro X6 Ultimate",
   "url": "https://www.wikidata.org/wiki/Q113679458",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "Photopea",
   "url": "https://www.photopea.com/",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "PicaJet",
   "url": "http://picajet.com/",
   "reads": true,
   "writes": false,
   "license": "freeware",
   "via": "netpbm-formats"
  },
  {
   "name": "PuriFile",
   "url": "https://purifile.com",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "Q1047199",
   "url": "https://imagemagick.org",
   "reads": true,
   "writes": false,
   "license": "ImageMagick License",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "Q122459461",
   "url": "https://www.wikidata.org/wiki/Q122459461",
   "reads": false,
   "writes": true,
   "via": "netpbm-formats"
  },
  {
   "name": "Q122522973",
   "url": "https://www.wikidata.org/wiki/Q122522973",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "Q130252332",
   "url": "https://sorairolake.github.io/qrtool/",
   "reads": true,
   "writes": false,
   "license": "Apache Software License 2.0 / Creative Commons Attribution 4.0 International / MIT License",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "Q141647655",
   "url": "https://getartcraft.com/apps/photocraft",
   "reads": true,
   "writes": true,
   "license": "Apache Software License 2.0 / MIT License",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "SimThyr",
   "url": "http://simthyr.sourceforge.net",
   "reads": false,
   "writes": true,
   "license": "BSD licenses",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "VideoStudio X7",
   "url": "https://www.wikidata.org/wiki/Q113644652",
   "reads": true,
   "writes": false,
   "via": "netpbm-formats"
  },
  {
   "name": "VYM",
   "url": "https://www.insilmaril.de/vym/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License, version 2.0",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "zgv",
   "url": "http://www.svgalib.org/rus/zgv/",
   "reads": true,
   "writes": false,
   "license": "GNU General Public License",
   "open_source": true,
   "via": "netpbm-formats"
  },
  {
   "name": "Zoner Photo Studio",
   "url": "http://www.zoner.com",
   "reads": true,
   "writes": true,
   "via": "netpbm-formats"
  }
 ],
 "projects": [
  {
   "name": "PRONOM fmt/406",
   "url": "https://www.nationalarchives.gov.uk/PRONOM/fmt/406",
   "kind": "format-doc"
  },
  {
   "name": "Wikidata Q28206695",
   "url": "https://www.wikidata.org/wiki/Q28206695",
   "kind": "wiki"
  },
  {
   "name": "File Formats Wiki",
   "url": "http://fileformats.archiveteam.org/wiki/Netpbm_formats",
   "kind": "wiki"
  }
 ],
 "provenance": {
  "sources": [
   "pronom",
   "wikidata"
  ]
 },
 "updated": "2026-10-20",
 "aliases": [],
 "structure": [],
 "parsers": [],
 "conversions": [
  {
   "to": "portable-network-graphics",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossless",
   "losses": "Pixels kept; some metadata, colour profiles or layers may be dropped.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "jpeg-file-interchange-format-1-02",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossy",
   "losses": "Lossy compression.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "webp",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossy",
   "losses": "Lossy compression.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "av1-image-file-format",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossy",
   "losses": "Lossy compression.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "jpeg-xl",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossy",
   "losses": "Lossy compression.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "gif",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossy",
   "losses": "Reduced to 256 colours.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "tagged-image-file-format",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossless",
   "losses": "Pixels kept; some metadata, colour profiles or layers may be dropped.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "windows-bitmap",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossless",
   "losses": "Pixels kept; some metadata, colour profiles or layers may be dropped.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "icon-file-format",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossy",
   "losses": "Icons are limited to 256 × 256 pixels.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "quite-ok-image-format",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "lossless",
   "losses": "Pixels kept; some metadata, colour profiles or layers may be dropped.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  },
  {
   "to": "pdf",
   "tool": "ImageMagick (WebAssembly)",
   "command": "In the browser at https://openformatdb.org/convert/, or convert_file in the OpenFormatDB MCP server",
   "fidelity": "partial",
   "losses": "The image is embedded in a PDF page.",
   "url": "https://openformatdb.org/convert/",
   "engine": "imagemagick",
   "via": "netpbm-formats"
  }
 ],
 "samples": [],
 "claims": [],
 "verification": []
}