Simon Willison’s Weblog

Opera small screen rendering

Opera Small-Screen Rendering (via Leonard):

Content reformatting—Instead of presenting table content in columns and rows, tables are reformatted into a one-dimensional structure that better fits smaller screens. Opera can selectively scale down large images or remove those that are superfluous, as well as some other tricks that make the pages fit small screens. And as a result, the user has no need for a horizontal scrollbar.

See also this C-Net article.