Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for identifying main content of a webpage. In one aspect, a method includes receiving a web document and analyzing the web document to identify sections of the web document and to determine a sequence of the sections. Each section corresponds to a logical portion of a graphical representation of the web document. A particular section is identified as containing main content of the web document based on characteristics of the particular section relative to characteristics of the sections overall. A modified web document is generated based on the identification of the particular section containing the main content.