Create new project, specifying source image which you want to split ("Create new project" button ). You can also drag and drop images from Explorer;
Add new vertical or horizontal splitters ( and buttons). New splitters will appear in the top and left part of working area;
Change position of splitters (push left mouse button on the selected splitter and pull it in required direction).
You can also change position of splitter endings, the way is the same (push left mouse button on the highlighted area around the ending and pull it)
For exact splitter positioning please use section "Selection" section located on the control panel of main screen. Just set required coordinates (in pixels) and press button;
Press button to see the list of obtained segments;
View obtained image parts and set additional splitting parameters (such as file type) in the "Split image" window (for more details see "Description of columns of list of obtained image parts");
Press button of the "Split image" window to split image, saving image parts and html;