Using ' Raster -> Extract -> Raster Cut ' in QGIS and 'Nodata = 0', I cut the black part of the Landsat8 image as shown below.
However, when I saved it as "tif file", it seems that the black area is still there.
So I tried to put the tif file in Google Earth, and it appeared as shown below.
I want to save and show only the image that I cut. Please give me some advice.