promanga

So perfect. That's all I need. It gives the result as I expected. Thank you a thousand times. PS: I am not sure why you suggest to me Step 2. ( https://forums.getpaint.net/topic/13454-animated-image-24-agif-apng/ ) . I think that Step 1+ Step 3 are good enough. Anyway, many thanks for your help.

It will merge all the layers to the background. Thank you. It worked but It's still slow. Waiting for solution with automatic plugin. How could I do it with 30 layers, I kept getting confused all the time.

I found a basic background and created a lot of layers basing on it. Now I try to merge each of layers to that basic background and get the output with PNG file type but it's too much for doing with normal way. Anyone know how to get around this annoying problem? I appreciate any idea. PS: Sorry if I didn't make it clear. Example: 10 layers (layer 1, layer 2, layer 3...) and one background. I need the outputs with layer 1+background, layer 2+background, ... It does the same with the rest.