The animation below illustrates what it is like when printed web content using Auto Fit feature occupies only a part of paper sheet leaving some unused / blank white space* on left and right sides of a page.
Note: If Print background colors and images option is enabled, unused space at edges of page will be filled with the background color of web site.
For optimal printing results in such situations, make Internet Explorer window size smaller than web content (i.e., web content should not fit into Internet Explorer window) before printing. Then choose Auto Fit Print Preview from ieZoom menu and print web page. Printed in such way, web page will be adjusted to occupy a whole page width (also applicable when printing on A4, letter or other sized paper).
In case you are looking for solution which is not already provided regarding to ieZoom toolbar, do not hesitate to contact our support department with your specific question. The solution will be provided shortly by e-mail and eventually added to FAQ.