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NEWS.txt
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ImageMagick version 7 has been released. We encourage you to migrate your workstreams to version 7. However, we recognize a significant version 6 user community. As such, the ImageMagick development team is committed to maintain, but not enhance, version 6 at least until 2028 and possibly beyond. We discovered a bug in the pseudo-random generator prior to ImageMagick 6.9.10-81, the first 3 values repeated because the random state was not initialized properly. As a consequence of the fix, expect a different numerical sequence when seeding (-seed). ImageMagick best practices strongly encourages you to configure a security policy that best suits your local environment. The ImageMagick development process ensures a stable API and ABI. Before each ImageMagick release, we perform a comprehensive security assessment that includes memory error, thread data race detection, and continuous fuzzing to detect and prevent security vulnerabilities. As an analog to linear (RGB) and non-linear (sRGB) color colorspaces, as of ImageMagick 6.9.9-29, we introduce the LinearGray colorspace. Gray is non-linear grayscale and LinearGray is linear (e.g. -colorspace linear-gray). Want more performance from ImageMagick? Try these options: add more memory to your system; add more cores to your system; reduce lock contention with the tcmalloc memory allocation library; push large images to a solid-state drive, see large image support. If these options are prohibitive, you can reduce the quality of the image results. The default build is Q16. If you instead use a Q8 build, you use half the memory The tradeoff is reduced precision. For a Q8 build of ImageMagick, use this configure script option: --with-quantum-depth=8.