Making of 8-bit pixelated picture from photo online
Specify a picture on your computer or phone and then click OK. Other settings already installed by default.
Example of photography of rose without changes and 8-bit picture, made on this website:
The dithering in the settings is almost the same as the sensitivity to color transitions. The higher this value, the more will be different colors in the eight-bit picture. If you specify the maximum value for dithering, result will not always be good. The default value 30, in general cases, is optimal.
The original image is not changed. You will get another processed image.