Yes, in all social networks, but I will keep in mind your recommendation for future publications. Thank you

PixelJoint has a function that allows viewers to zoom in on pictures; unless you're putting these somewhere other than just PixelJoint?

Thank you, but I like the final image looks sharp and easy to see, for that I generate the final image bigger the real resolution

I don't know about the Pixaki app, but, so you know, there's no reason to scale the image up as you've done here. You could leave the image at its native resolution and not even need to have a preview file (unless you want the canvas to be as large as it is).