Hi, trentssh123
Here, some advice:
Usually, after converting a book with multiple pictures, Calibre makes multiple CSS entries in the book's stylesheet.css, like this:
Code:
.calibre35 {
height: 2645px;
line-height: 1.23;
vertical-align: baseline;
width: 1600px
where height and width are dimensions of the corresponding picture.
Open this converted book in Sigil, then open stylesheet.css and change height and width values to 100%. That could be done manually or with a find/replace feature. This modification will tell your viewer to show all images fully according to a device display.
Hope, it'll help.