Open files from the File > Open menu item within TIFF Viewer:
Files can be opened from within the TIFF Viewer itself from the File > Open menu item, which opens the following window:
Double clicking on the file opens the file in a new image window within the TIFF Viewer:
Open files from the Windows Explorer:
Files can also be opened with the TIFF Viewer by double clicking on an associated file type from the Windows Explorer.
Double clicking on the file opens the file in a new image window within the TIFF Viewer:
Open files with Drag and Drop:
Files can also be opened by dragging and dropping the selected image to the TIFF Viewer.
Drop the file and it opens in a new image window within the TIFF Viewer: