The TinyPNG Java SDK by TinyPNG communicates with the API to access image optimization data. It allows to integrate compression features into web services, useful for SEO purposes. Resources contain documentation, installation, usage, and running tests.
Image processing probably isn't the most exhilarating part of creating a website, and a tool that could take care of all of that would definitely be appealing. Blitline is a cloud based image processing platform that works on a pay-as-you-go basis. The Blitline API allows users to submit thousands of jobs to be processed and pushed to their online photo storage service, using a simple JSON interface.