Windows CLI is not outputting compressed images

[ankitsinghas]

I downloaded a command-line binary for Windows, run it from CMD, but the problem is that it is not outputting compressed images. All commands are working properly, but when I run an image compression command like "pngquant --quality=65-80 png_original.png", the command does not print any errors and I not get a compressed image.
what's the problem?
Im running Windows 10 1909 Pro 64-bit.

[kornelski]

This is normal behavior. By setting quality to at least 65 you tell the program to not compress anything if compression happens to lower quality more than that.

Use --quality=0-80 to always compress.