gnu: Add pngquant.
* gnu/packages/image.scm (pngquant): New variable.
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@ -337,6 +337,50 @@ images. This library can significantly reduces file sizes and powers pngquant
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and other PNG optimizers.")
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and other PNG optimizers.")
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(license license:gpl3+)))
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(license license:gpl3+)))
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(define-public pngquant
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(package
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(name "pngquant")
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(version "2.12.3")
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(source
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(origin
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(method git-fetch)
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(uri (git-reference
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(url "https://github.com/kornelski/pngquant.git")
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(commit version)))
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(file-name (git-file-name name version))
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(sha256
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(base32 "1yiwbcihn4311fpfd568gg8zmmhqwg80jmhbhkb5msiipgd9xv33"))))
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(build-system gnu-build-system)
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(arguments
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`(#:test-target "test"
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#:configure-flags
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'("--with-openmp" "--with-lcms2")))
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(native-inputs
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`(("pkg-config" ,pkg-config)))
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(inputs
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`(("libpng" ,libpng)
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("zlib" , zlib)
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("lcms" ,lcms)
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("libimagequant" ,libimagequant)))
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(home-page "https://pngquant.org/")
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(synopsis "Utility and library for lossy compressing PNG images")
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(description "pngquant is a PNG compressor that significantly reduces file
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sizes by converting images to a more efficient 8-bit PNG format with alpha
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channel (often 60-80% smaller than 24/32-bit PNG files). Compressed images
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are fully standards-compliant and are supported by all web browsers and
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operating systems.
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Features:
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@enumerate
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@item High-quality palette generation using a combination of vector
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quantization algorithms.
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@item Unique adaptive dithering algorithm that adds less noise to images
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than the standard Floyd-Steinberg.
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@item Easy to integrate with shell scripts, GUIs and server-side software.
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@item Fast mode for real-time processing/large numbers of images.
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@end enumerate")
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(license license:gpl3+)))
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(define-public libjpeg
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(define-public libjpeg
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(package
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(package
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(name "libjpeg")
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(name "libjpeg")
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