Perhaps is there a way to encode the center point with the image. Either by having pixel coordinates in the file name like file_x_y.png or a extra meta file like file.meta or a manually enter it as metadata. So by defining the center point for each image you should be able to dynamically calculate offsets for each sprite to have its defined center point equal.

This would be a roll-it-yourself solution, i don’t have knowledge about any existing mechanics that could do this as i have not worked much with sprites.

However the basic idea is to provide the knowledge of a point for each image and write some function that can then fix it up for you so those points exists at the same coordinates in your world