Zen Colorbox

[DivaVocals]

It is definitely resizing images. Nothing in zen cart is saying to make an image 745 x 745, yet Colorbox is doing so. Probably due to this:

#colorbox, #cboxContent, #cboxLoadedContent{box-sizing:content-box; -moz-box-sizing:content-box; -webkit-box-sizing:content-box;}

Again.. NOTHING in the Colorbox CSS or Jasvascript or code RE-SIZES images.. Including the box-sizing. content-box simply tells the browser what to to with the width and height properties.. It does NOT define them..

http://www.w3schools.com/cssref/css3_pr_box-sizing.asp

CSS Syntax  box-sizing: content-box|border-box|initial|inherit;

 Property Values 
Value
Description

 content-box
Default. The width and height properties (and min/max properties)  	includes only the content. Border, padding, or margin are not included

 border-box
The width and height properties (and min/max properties) includes  	content, padding and border, but not the margin

initial
Sets this property to its default value. Read about initial

inherit
Inherits this property from its parent element. Read about inherit


    

Image sizing is managed through Zen Cart admin settings..

Now you can continue to try and insist that Colorbox is doing something it's really NOT doing or you can post some information to help us help you figure out what the actual cause of your issue is.. Post your Admin Configuration image setting are and post a link to your site.. Can't help you any other way at this point..