{
  "fileFormatID": 1938,
  "formatName": "Progressive Graphics File",
  "version": null,
  "formatDescription": "Progressive Graphics File (PGF) is a raster image format developed by Christoph Stamm. Please contact the PRONOM team if you are able to provide a more detailed description.",
  "releaseDate": null,
  "binaryFileFormat": null,
  "formatNote": null,
  "lastUpdatedDate": "29 Nov 2017",
  "formatProvenance": null,
  "formatSourceDate": "29 Nov 2017",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Image (Raster)",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "fmt/1128",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [
    {
      "signatureID": 1510,
      "name": "Progressive Graphics File",
      "note": "BOF: \"PGF\", Version = The source code suggests possible versions 2, 5, 6, 7, however samples available from the libpgf SourceForge project site are all version 6. http://libpgf.org/fileadmin/MEDIA/PGF_Details.pdf",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 0,
          "maxOffset": 0,
          "byteSequence": "504746(02|05|06|07)",
          "endianness": null,
          "byteSequenceID": 1771
        }
      ],
      "provenance": "See also http://www.libpgf.org/libPGF/doc/html_7.15.32/PGFtypes_8h_source.html"
    }
  ],
  "externalSignatures": [
    {
      "externalSignature": "pgf",
      "signatureType": "File extension"
    }
  ],
  "relationships": [],
  "submittedBy": [
    1
  ]
}