Here’s a simple experiment newcomers to Kindle publishing can do to show you the kind of bloat that Word adds to HTML output, if you were tempted to take that route. Save a big book-length Word file as ‘filtered HTML’ in Word 2007. ‘Filtered’ removes all the cruft, right? Wrong. Open your filtered HTML with Notepad or your “doesn’t hide the scary code” HTML editor. I had 3,500 lines of utterly superfluous code, before I managed to scroll down to the actual content.