Image renditions are a new feature of SharePoint 2013 that let you insert multiple sizes of the same image using the same source image. Image renditions specify the height and width to use when adding an image to a page.
Using image renditions requires BLOB cache to be enabled for the SharePoint web application. See http://technet.microsoft.com/en-us/library/cc770229.aspx for more information.
Follow these steps to create an image rendition:
Image rendition configurations are stored as SharePoint list items. When an image rendition is applied to an image, SharePoint creates cached versions of the image in the formats dictated by the image renditions.
3.133.156.251