WidgetArea is a small simple application that enables you to use image
...Mac Usage Instructions: Click the upload image or drag and drop an image there to display in a new window.
To close the newly opened image press "CMD+W".
To quit WidgetArea press "CMD+Q"
To move the image just drag it anywhere on the screen.
Yes, you can resize added images in this release.
There's no built-in option to adjust pinning or transparency in this release. However, WidgetArea for Mac does support transparent PNG's and GIF images.