Hi,
If you want some ideas on how you can integrate Web API Images in your QlikView apps you may want to take a look at this recent blog post:
http://www.quickintelligence.co.uk/using-web-api-images-qlikview/
It takes a use case of showing bar codes in a straight table and describes how this can be done, but also looks at using other Web APIs, such as the Google Image Chart API.
Hope you find it interesting.
Steve