A decade ago, it was nearly universal for all compilers to be installed on a computer and then operated either through a command terminal or a graphical user interface. The power of the internet today means that it is possible to log into a compiler in a web browser. There are a lot of advantages to doing this, ranging from accessing remote processing to using specialized compilers. Log in and try an online programming platform.
There are advantages and disadvantages to using a browser-based programming tool. The advantages are that it can be used to instruct a beginning student in the art of basic programming. It can also be used to test a program or object on the fly using a web browser. The disadvantage is that the compiler might depend on local processing. On the more exciting side, execution might be offloaded to a supercomputer.