What Do Web Browsers Do?

1. Web browsers send a request to a web server (typically the name of file, like resume23.html).
2. Then they receive a response back from the server (typically the requested file or an error message).
3. Then the web browser renders (or displays) the file it receives.

Thus, a web browser is a network communations device and a rendering engine (it renders HTML, GIF, JPEG, etc.).