title_body: How to create an ePub full-page image which properly reflows
upvoted_answer: Either put the images in their own html files or use the code above, page-break-before, or -after. 
  
  In these situations I generally use the css height: 100%, on both the container and the image itself, so if you use 
  
  &lt;div class="fullscreenimage"&gt;&lt;img src="some-image.jpg" alt="lalala" /&gt;&lt;/div&gt;
  
  
  you could create this css rule that does what you want:
  
  div.fullscreenimage , div.fullscreenimage img {height: 100%;}