Windows 10, InD CC 2018
I recently made a reflowable ePUB 3 file. My client also wanted this for Kindle. The image dimensions were either landscape or portrait. I made 2 different Object styles for the images - 1 for each. Both used Custom Anchoring and both had the image Size dropdown menu set to Relative To Textflow (EPUB and HTML). After exporting, I opened the ePUB file in Kindle Previewer 3.2.1.0 to make a mobi file. When i preview in Portrait Orientation, the images look fine, but when I switch to Landscape, the images that were taller in dimension (portrait), are displaying the top half, but cutting off the rest. Another oddity is when I preview in Kindle Reader for PC, both sets of images are being stretched to fit the entire preview region. When I turn on page columns, both images still get stretched to fit the entire column. However, when I preview on Kindle for iOS on my iPhone 6s+, the images look fine - no stretching, regardless if I hold the phone in landscape or rotate to portrait.
My first thought was the Kindle CSS has the width and height are both set to 100%, rather than just one value set to this, with the other resizing proportionately. I'm trying to open the mobi file to with KindleUnpack, to have a look at the CSS, but it keeps saying the unpacking failed. Below are 2 screenshots from K Previewer and 2 from K Reader for Windows:
![kindle-previewer-landscape.jpg]()
![kindle-previewer-portrait.jpg]()
![kindle-reader-windows-1-column.jpg]()
![kindle-reader-windows-2-column.jpg]()