Not all browsers support JPEG images. The most common movie format for the Web. It is based on the JPEG image standard. Viewers exist for all platforms. This audio standard was developed on UNIX platforms.
Sound players exist on almost every platform.
A Uniform Resource Locator is a compact representation of the location and access method for a resource available via the Internet. Service Type - Signifies to the browser the type of server to be contacted. The network socket address for specific services. HTTP defaults to port 80. Therefore, it does not need to be specified unless the receiving system is using a non-default value port.