You can shrink the canvas.

ctrl+alt+c

If your picture is just a layer

Want to keep the content unchanged

Narrow the background

Scale can be identified by content.

Make a constituency and choose what you want to keep.

And then perform storage selection.

Reuse content recognition rate

In the tool property bar above.

Protection column selection

The voters you just saved.

And then shrink

After confirming the shrinkage deformation

Just cut off the transparent pixels with a cutting tool.