How to remove transparent pixels in gimp or how to do trimming?

Question

GIMP

I copied the selection, created a new layer and pasted it here.
Now I only need to export the selection, not the entire layer.

How can I do it?
In Photoshop, for one or two, but in Gimp it is not customary.
Thanks in advance.

Answer 1

Choose Image -> Crop to content.