<?xml version="1.0" encoding="utf-8"?>
<PRONOM-Report xmlns="http://pronom.nationalarchives.gov.uk">
  <report_format_detail>
    <FileFormat>
      <FormatID>1354</FormatID>
      <FormatName>WebP</FormatName>
      <FormatVersion>Lossy</FormatVersion>
      <FormatAliases>
      </FormatAliases>
      <FormatFamilies>
      </FormatFamilies>
      <FormatTypes>Image (Raster)</FormatTypes>
      <FormatDisclosure>
      </FormatDisclosure>
      <FormatDescription>WebP is a raster image format developed by Google that uses the Resource Interchange File Format as a container. WebP's lossy compression algorithm is based on the intra-frame coding of the VP8 video format.</FormatDescription>
      <BinaryFileFormat>
      </BinaryFileFormat>
      <ByteOrders>
      </ByteOrders>
      <ReleaseDate>
      </ReleaseDate>
      <WithdrawnDate>
      </WithdrawnDate>
      <ProvenanceSourceID>1</ProvenanceSourceID>
      <ProvenanceName>Digital Preservation Department / The National Archives</ProvenanceName>
      <ProvenanceSourceDate>19 Jul 2013</ProvenanceSourceDate>
      <ProvenanceDescription>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. Submitted by Archives New Zealand. 04/2024 (v.117)- Corrected MIME identifier to 'image/webp'. Submitted by Archives New Zealand.</ProvenanceDescription>
      <LastUpdatedDate>14 Aug 2023</LastUpdatedDate>
      <FormatNote>
      </FormatNote>
      <FormatRisk>
      </FormatRisk>
      <TechnicalEnvironment>
      </TechnicalEnvironment>
      <FileFormatIdentifier>
        <Identifier>fmt/566</Identifier>
        <IdentifierType>PUID</IdentifierType>
      </FileFormatIdentifier>
      <FileFormatIdentifier>
        <Identifier>image/webp</Identifier>
        <IdentifierType>MIME</IdentifierType>
      </FileFormatIdentifier>
      <Developers>
        <DeveloperID>141</DeveloperID>
        <DeveloperName>
        </DeveloperName>
        <OrganisationName>Google</OrganisationName>
        <DeveloperCompoundName>Google</DeveloperCompoundName>
      </Developers>
      <Support>
        <SupportID>141</SupportID>
        <SupportName>
        </SupportName>
        <OrganisationName>Google</OrganisationName>
        <SupportCompoundName>Google</SupportCompoundName>
      </Support>
      <ExternalSignature>
        <ExternalSignatureID>1391</ExternalSignatureID>
        <Signature>webp</Signature>
        <SignatureType>File extension</SignatureType>
      </ExternalSignature>
      <InternalSignature>
        <SignatureID>902</SignatureID>
        <SignatureName>WebP Lossy</SignatureName>
        <SignatureNote>RIFF{4}WEBPVP8</SignatureNote>
        <ByteSequence>
          <ByteSequenceID>1126</ByteSequenceID>
          <PositionType>Absolute from BOF</PositionType>
          <Offset>0</Offset>
          <MaxOffset>0</MaxOffset>
          <IndirectOffsetLocation>
          </IndirectOffsetLocation>
          <IndirectOffsetLength>
          </IndirectOffsetLength>
          <Endianness>
          </Endianness>
          <ByteSequenceValue>52494646{4}5745425056503820</ByteSequenceValue>
        </ByteSequence>
      </InternalSignature>
      <RelatedFormat>
        <RelationshipType>Has priority over</RelationshipType>
        <RelatedFormatID>2741</RelatedFormatID>
        <RelatedFormatName>Resource Interchange File Format (RIFF)</RelatedFormatName>
        <RelatedFormatVersion>
        </RelatedFormatVersion>
      </RelatedFormat>
    </FileFormat>
    <SearchCriteria>Criteria</SearchCriteria>
  </report_format_detail>
</PRONOM-Report>
