{
  "fileFormatID": 1355,
  "formatName": "WebP",
  "version": "Lossless",
  "formatDescription": "WebP is a raster image format developed by Google that uses the Resource Interchange File Format as a container. WebP\u2019s lossless compression uses advanced techniques such as dedicated entropy codes for different color channels, exploiting 2D locality of backward reference distances and a color cache of recently used colors. This complements basic techniques such as dictionary coding, Huffman coding and color indexing transform.",
  "releaseDate": null,
  "binaryFileFormat": null,
  "formatNote": null,
  "lastUpdatedDate": "15 Apr 2024",
  "formatProvenance": "08/2023 (v.113) - Added priority over fmt/1886 (Resource Interchange Format (RIFF)). Submitted by New York Public Libraries and Preservica. 11/2023 (v.115)- Added MIME identifier 'webp/image'. Submitted by Archives New Zealand. 04/2024 (v.118)- Corrected MIME identifier to 'image/webp'. Submitted by Archives New Zealand.",
  "formatSourceDate": "19 Jul 2013",
  "formatDisclosure": null,
  "formatEnvironment": null,
  "formatRisk": null,
  "formatAliases": null,
  "formatTypes": "Image (Raster)",
  "formatFamilies": null,
  "identifiers": [
    {
      "identifierText": "fmt/567",
      "identifierType": "PUID"
    },
    {
      "identifierText": "image/webp",
      "identifierType": "MIME"
    }
  ],
  "internalSignatures": [
    {
      "signatureID": 903,
      "name": "WebP Lossless",
      "note": "RIFF{4}WEBPVP8L",
      "byteSequences": [
        {
          "positionType": "Absolute from BOF",
          "offset": 0,
          "maxOffset": 0,
          "byteSequence": "52494646{4}574542505650384C",
          "endianness": null,
          "byteSequenceID": 1127
        }
      ],
      "provenance": "https://developers.google.com/speed/webp/docs/riff_container#example-file-layouts"
    }
  ],
  "externalSignatures": [
    {
      "externalSignature": "webp",
      "signatureType": "File extension"
    }
  ],
  "relationships": [
    {
      "relationshipType": "Has priority over",
      "relatedFormatID": 2741,
      "relatedFormatName": "Resource Interchange File Format (RIFF)",
      "relatedFormatPUID": "fmt/1886"
    }
  ],
  "supportedBy": [
    141
  ],
  "developedBy": [
    141
  ],
  "submittedBy": [
    1
  ]
}