Just found out lcms2 has fast mode since last summer..<div><br></div><div><a href="https://github.com/mm2/Little-CMS/releases">https://github.com/mm2/Little-CMS/releases</a></div><div>LittleCMS 2.10</div><div> lcms2.10</div><div> 2021357</div><div>Compare </div><div>@mm2 mm2 released this on 5 Jun 2020</div><div><br></div><div>Change Log:</div><div><br></div><div>Added a compilation toggle to remove &quot;register&quot; keyword in API.</div><div>Previously commercial, fast_float plug-in is now released as open source under GPL3 license.</div><div><br></div><div>===</div><div>Little CMS floating point plug-in accelerates 8 bit and floating point color transforms, and adds some other features:</div><div><br></div><div>Adds support for internal Photoshop 1.15 fixed point format</div><div>Adds a new formatter to obtain dither on 8 bit for certain color spaces (Gray, RGB and CMYK)</div><div><br></div><div>==</div><div><br></div><div><a href="https://www.littlecms.com/plugin/">https://www.littlecms.com/plugin/</a></div><div><br></div><div>should be buildable via configure switch (?) since 2.12 release last February.. </div><div><br></div><div><br></div>