title_body: pictures show twice in android app
upvoted_answer: After so long I came back to this issue and found the solution.
  
  
  I open the epub in 7z (but not unzip) 
  I drag the image folder out and recompress it with Ifranview to my liking.
  Now I drag it back into the open 7z window to replace the old image folder
  close 7z, and now the epub is half size and opens correctly in any epub app,