This is a VERY good program...Great job...though I do have three questions: (1) my converted file occationally displays blank pages. Could this be avoided in the conversion program...just skip blanks (2) The file is relatively big...typically 6X of PDF. Is there a way to reduce this size, such as by reducing the number of color outputs (Sony Reader is black and white anyway), etc. (3) Where does the number of gray levels come into play? by specify the number of colors? (You know the Sony PRS-505 has 8 levels, while 500 has 4)...Any answer or comment on these is greatly appreciated...Again, great program...