Browsers show the address of the page that defines the frames, rather than the addresses of the content pages actually shown. A hot debate has raged on whether to use frames or not in web design. He argues that frames violate the conception of the page as the fundamental unit of information which is a basic assumption in the original web model. URLs similarly no longer work for referring to information. As mentioned above, the URL shown only represents the initial state of the frame documents, creating the same problem as with bookmarks .
Search engines are unable to properly handle frames.
Printing is complicated . It is unclear whether to print a single frame or all and in the latter case how to lay them out. Many browsers do not support frames and will be unable to view the document as intended. However, there are reasons why frames are used. Read what others have written.