Why is web optimization an important document feature?
Viewing documents on the Web is different than viewing them locally, e.g., on a LAN. Files viewed over the Web must generally be downloaded in order to display. Without web optimization, which typical image formats (e.g., TIFF) do not support, a file would have to download completely just to view the first page. This can make viewing a large multipage scanned file very inefficient. PDFs that are web optimized can be viewed on a per page basis, without waiting for the rest of the file to transfer. So a 300-page PDF file could have its first page displayed as soon as the page had been downloaded. Web optimized PDFs also support opening to a random page in a multipage file. This is useful for efficient display of search query results.