The soften tool allows you to take the “edge” off the border of an object. You can use it for both images and text. In the examples below I also used some other effects.
original
soften edges
soften with color change
soften with washout
change color to light blue
Plain font
more softened with shadow
picture “trimmed” to rectangle Reshaped to “wavy” (notice jagged edges) soften edges
picture “trimmed” to rectangle
Reshaped to “wavy” (notice jagged edges)