How Frames Work Frames are a common feature on web sites these days. This was not always the case, and many older browsers do not support frames. If your browser does not support frames, you might like to read our informative article on upgrading your browser .
Frames divide a web page into multiple, scrollable regions.
In actuality, each of these regions is a separate web page. The separate web pages are held together by what is called a frameset, which determines the relative size of each region. Some regions will expand to fill the browser window, while some regions are programmed to remain a constant size. The reason web designers use frames varies, but most commonly they are used for site navigation purposes. The benefit of this is that the navigation system doesn't have to reload every time you open a new page, saving on download time.