About gif to jpg color distortion

[beginner]

2.gif


convert 2.gif -background white -flatten 2.jpg

2.jpg



If you convert to a png image, the color will not be distorted

convert 2.gif -background white -flatten 2.png

2.png



Why are the colors distorted when converted to jpg pictures?
What parameters convert.exe need to add to keep the jpg image color unchanged?

thanks

[fmw42]

Gif has limited colors (<=256) and palette type. When converted to jpg with lossy compression, you introduce new colors and 24-bit color. You would have to create a color map image and use -recolor to try to get the same colors back in your jpg, though that may not work, since JPG does not support 8-bit total color.

[beginner]

Thanks for your tip.

When I set the image compression quality to 100, the color is no longer distorted.