> HTTrack creates duplicate images.
> The images has same size and name but downloaded
> from another location
> e.g.
> somepage.com/image.jpg
> somepage.com/section/image.jpg
> 
> and httrack creates image.jpg and image-2.jpg
> 
> Is there any setting what can avoid this?> for example: image.jpg will be
replaced by new
> image.jpg

What make you think that each image is always identical?  Just because the
name is the same doesn't mean they're always the same.

I general they won't be the same.  Most sites link to a single copy to
minimize bandwidth. Your site's webmaster was lazy.