Legacy ImageMagick Discussions Archive

Thanks - JPG lossy compression the culprit. Using PNG and finally got it sorted.

Hi

Append doesn't appear to be working correctly for small images (1x1, 2x2 probably others).

As an example, try the following to generate 1x1 pixel images in red, green, blue:
convert -size 1x1 canvas:red red.jpg
convert -size 1x1 canvas:green green.jpg
convert -size 1x1 canvas:blue blue.jpg

Now ...