[ANNOUNCEMENT] Updated: libwebp{, -devel, 7, decoder3, demux2, mux3} 1.2.3

Cygwin libwebp Maintainer Brian.Inglis@SystematicSW.ab.ca
Mon Jul 18 04:15:36 GMT 2022

The following packages have been upgraded in the Cygwin distribution:

* libwebp		1.2.3
* libwebp-devel		1.2.3
* libwebp7		1.2.3
* libwebpdecoder3	1.2.3
* libwebpdemux2		1.2.3
* libwebpmux3		1.2.3

WebP is a modern web image format with superior compression.
WebP lossless images are 26% smaller in size compared to PNGs.
Lossless WebP supports (alpha channel) transparency at a cost of 22% overhead.
WebP lossy images are 25-34% smaller than JPEG images at equivalent quality.
Lossy WebP supports transparency with 3× smaller file sizes than PNG.
A WebP file consists of VP8 or VP8L image data in a RIFF container.

For more information see the project home page:


As there are multiple components and changes each release please
see below or read /usr/share/doc/libwebp/NEWS after installation;
for complete details of changes see:


version 1.2.3	6/30/2022

* security fix for lossless encoder (#565, chromium:1313709)
* improved progress granularity in WebPReportProgress() when using lossless
* improved precision in Sharp YUV (-sharp_yuv) conversion
* many corrections to webp-lossless-bitstream-spec.txt (#551)
* crash/leak fixes on error/OOM and other bug fixes (#558, #563, #569, #573)

This is a binary compatible release.

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