Mozilla is working on a JavaScript framework called Fathom that “enables Firefox to understand the structure and content of a web page,” said Mozilla’s Erik Rose. It can identify meaningful parts of a Web page, such as login links, address forms, navigation, previous/next buttons and text content.
Although Fathom is still in the early stages of development, Mozilla is using it in production with Firefox’s Activity Stream web traffic tracker. In the future, the technology could be used in more browsers, browser extensions and server-side software.
Fathom could play into efforts to develop the semantic Web.