{
  "fileFormatID": 2681,
  "formatName": "PPTX Strict OOXML Presentation",
  "version": "2007 onwards",
  "formatDescription": "PPTX Strict is the implementation of the Office Open XML presentation format that strictly conforms to the ISO 29500-1: 2008-2016 standard.",
  "releaseDate": null,
  "binaryFileFormat": null,
  "formatNote": "https://www.loc.gov/preservation/digital/formats/fdd/fdd000402.shtml",
  "lastUpdatedDate": "14 Feb 2023",
  "formatProvenance": "This format can be identified via a container signature in DROID version 6 or later. The PRONOM database cannot currently represent container signatures.",
  "formatSourceDate": "14 Feb 2023",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Presentation",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "application/vnd.openxmlformats-officedocument.presentationml.presentation",
      "identifierType": "MIME"
    },
    {
      "identifierText": "fdd000402",
      "identifierType": "Library of Congress Format Description Identifier"
    },
    {
      "identifierText": "fmt/1829",
      "identifierType": "PUID"
    }
  ],
  "internalSignatures": [],
  "externalSignatures": [
    {
      "externalSignature": "pptx",
      "signatureType": "File extension"
    }
  ],
  "relationships": [
    {
      "relationshipType": "Has priority over",
      "relatedFormatID": 941,
      "relatedFormatName": "Microsoft Powerpoint for Windows",
      "relatedFormatPUID": "fmt/215"
    }
  ],
  "supportedBy": [
    93
  ],
  "developedBy": [
    93
  ],
  "containerSignatures": [
    {
      "containerType": "ZIP",
      "id": "3200",
      "description": "Microsoft PowerPoint OOXML Strict",
      "files": [
        {
          "path": "ppt/presentation.xml",
          "byteSequences": [
            {
              "subSequences": [
                {
                  "position": "1",
                  "subSeqMinOffset": "0",
                  "subSeqMaxOffset": "2048",
                  "sequence": "'xmlns:p=\"http://purl.oclc.org/ooxml/presentationml/main\"'"
                }
              ],
              "reference": "BOFoffset"
            }
          ]
        }
      ]
    }
  ],
  "submittedBy": [
    301
  ]
}
