A proxy server is a half-way between your computer and the internet resources you are accessing. The data you request come to the proxy first, and only then it transmits the data to you. Proxy servers are used for security and privacy and are typically found in office buildings. In case you need to access FTP to retrieve large batched of image files, or send your image files by e-mail, but you have to do it at work via proxy server , you can setup this access with ImageConverter Plus.