Format
WebP
Summary
- Name
- WebP
- Version
- Lossless
- Identifiers
-
- PUID: fmt/567
- MIME: image/webp
- Format type
- Image (Raster)
- Description
- WebP is a raster image format developed by Google that uses the Resource Interchange File Format as a container. WebP’s 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.
- File extensions
-
webp - Source
- Digital Preservation Department / The National Archives
- Developed by
- Supported by
Relationships
- Has priority over
Internal signatures
WebP Lossless
- Note
- RIFF{4}WEBPVP8L
Byte sequences
- Min Frag Length
- Absolute from BOF
- Offset
- 0
- Max offset
- 0
- Byte Sequence
52494646{4}574542505650384C- Endianness
- None
Changelog
-
Updated in V118
- Release date
- 30 April 2024
WebP Lossless: Added MIME type identifier image/webp. Submitted by Archives New Zealand.
-
Updated in V115
- Release date
- 15 November 2023
WebP Lossless: Added MIME type identifier webp/image. Submitted by Archives New Zealand.
-
Updated in V114
- Release date
- 22 August 2023
WebP Lossless: Added priority over fmt/1886. Submitted by New York Public Libraries and Preservica.
-
Added in V69
- Release date
- 19 July 2013
WebP Lossless: Signature developed through PRONOM Research.
WebP Lossless: Outline Entry Added.