ThumbsPlus offers a powerful image and document viewer which can be started by double-clicking any file.

The ThumbsPlus image viewer toolbar is always hidden when the viewer is started.  To display it press “T” on your keyboard or activate the menu option “View ► Toolbar”.

This is a list of the most useful options for manipulating image files:

Control	Name	Keyboard Shortcut	Description
	Save Save As	Ctrl+S	Save current image Save current image as a new file
	Undo Redo	Ctrl+Z Ctrl+Y	Undo last change Redo last Undo
	Histogram	M	Adjust image histogram
	Adjust Colors	C	Adjust image colours
	Image Stamp	A	Add text or picture stamp to image
	Resize	R	Change size of image
	Turn 90° CCW Turn 90° CW	Ctrl+Shift+Alt+Left Ctrl+Shift+Alt+Right	Rotate image 90 degrees anticlockwise Rotate 90 degrees clockwise
	Loupe	Q	Activate loupe to investigate image in detail
	Full Screen	F5	Show image full screen
	Original (1:1)	Shift+Alt+Z	Display image at its original size
	Zoom In Zoom Out	Z Shift+Z	Enlarge image Zoom out of image
	Fit All Fit Width	F6 Ctrl+W	Size image to fit viewer window Size image to fit width of viewer window
	Previous File Next File	Space Backspace	View previous file in the same folder View next file in the same folder
	Properties	Alt+Enter	View detailed file metadata of image