How to Save/Export a single layer as an PNG image in Photoshop.

 There are some methods to to that. But here let's make it a perfect save/export. Meaning, not anyhow save it as a file, but to autocrop and make it a PNG image.

Eg. I'd like to save only this wrapped text "Caspian Sea" as a PNG image (for further animation usage in keynote), because keynote cannot wrap text.

Step 1. Right click this text layer.

Step 2. Click quick export as PNG.

Or you may click Export as to have more options.

The outcome is like this.