-jpgconvert producing color JPEG for grayscale PNG inputs
dan said, on 20/10/2021
Two identical images: JPG - https://i.postimg.cc/vMr4Rk7k/pieck.jpg PNG - https://i.postimg.cc/c0drdhXH/pieck.png pingo -jpgquality=90 -sb image.jpg 8-bit JPEG: https://i.postimg.cc/jxQt90Vh/pieck-jpg.jpg pingo -jpgconvert=90 -sb image.png 24-bit JPEG: https://i.postimg.cc/y61sCQsC/pieck-png.jpg The output is identical but -jpgconvert should produce an 8-bit JPEG in this case. I currently have to use jpegtran to discard the chroma channels due to this issue.
cédric (dev) said, on 26/10/2021
would be fixed in next release — thanks for report