1. A computer program product for visual image comparison, comprising: a non-transitory computer readable storage medium and program instructions stored on the non-transitory computer readable storage medium, the program instructions comprising: program instructions to receive a request for a visual comparison to a first image of an item displayed in a Web-based shopping portal of a requester; responsive to receiving the request for the visual comparison to the first image, program instructions to retrieve automatically a second image of a previously featured item, wherein the second image: is determined to be contextually related to the first image based on a set of information from a website which the requester has uploaded content and purchased a product, comprises one or more images associated with an object previously purchased by the requester from a Web-based shopping history of the requester, and comprises a comparable size to the first image and a similar usage scenario to the first image; program instructions to retrieve a third image, wherein the third image comprises standard reference objects representative of a set of possessions of the requester, wherein the standard reference objects are images offered at the Web-based shopping portal of the requester; program instructions to generate a set of dimensional properties of the second image, based on the first image, wherein: the set of dimensional properties of the second image comprise: a color, a size, an orientation, and a position on a display; and the set of dimensional properties of the second image are based in part on a determination made by an image scaler and an image rotator, which mines metadata from a product manual to determine the set of definitional properties of the second image relative to the first image; program instructions to generate a predicted change in the set of dimensional properties of the second image at a future period of time; and program instructions to display the third image, the second image, and the first image for the visual comparison, wherein the generated set of dimensional properties of the second image represent a relative size of the first image to the second image, and the standard reference objects of the third image represent a relative size of the first image to the third image.