The Gravatar Java Sample Code by Gravatar demonstrates how to create an avatar URL with string hash and string email. For additional resources, consult the Java library available at https://github.com/ralfebert/jgravatar
You-Tracker.com offers a free web service that allows websites to resize images to a specified height and width. Programmatic access to the service comes through the You Tracker Image Resizer API. The service allows users to preserve image quality percentage, aspect ratio, and can prevent enlargement. The API eliminates the need to manually resize images and users need not wait for images to load.
With no prior warning, Twitter has changed how apps can access images sent through Twitter's Direct Message API. Twitter was unable to give prior notice for security purposes, but the changes are in effect. Twitter encourages developers who access images through the API to check their integration.
Cheezburger, one of the largest social humor networks on the Internet, has launched a new Cheezburger API which allows developers to create innovative applications (web, mobile and desktop) where users can experience the Cheezburger platform by sharing lolcats, memes, and other funny pictures.