Select the image layer you want to export.
To export part of an image layer, select the region you want to export.
Choose File > Export > Canvas Image/Mask Layer to open the File Browser.
To choose the image file format choose File > Export > Canvas Image/Mask Layer , choose the image file format (JPEG, ALS, TIFF, 24 bit BMP, or 32 bit BMP), and click Go.
Use the File Browser to enter a name for the image file and click Save.