(not available in Lite version)
This operation makes it possible to set currently viewing image as a wallpaper. When you select this operation from a Tools popup menu or pressing keyboard shortcut Ctrl+W, the viewing image immediately is set as a current wallpaper, and a special dialog is appearing to adjust it on screen or cancel operation. (In case you cancel the operation, the previous wallpaper is restored together with all its settings).
To make the desktop with wallpaper well viewable while adjusting it, all other windows (including the main window of the Zoomer itself) are minimized when the dialog is appearing. With the Zoomer's dialog, image which does not fit screen can be placed easily with customized offsets from top left corner of screen (not centered only). Shifting works for all stretching/tiling modes, but fast shifting with nine no-named buttons (see it in top right corner of the dialog) can fail it the image (stretched or not) is covering entire screen.
Take a note also, that for cases Stretched to fit Screen, As is and Tiled the image is prepared scaled (taking into account also Square pixel settings, so it is scaled to be viewable with correct proportional size for these modes).