Abstract: A method and device for increasing the online browsing and loading speed of a PDF document, comprising: acquiring attribute information of a PDF document from a remote server, and determining whether the PDF document is a nonlinear document; if yes, then acquiring cross reference table data from the remote server, determining position and size of the page tree of the PDF document according to the cross reference table data, and acquiring the page tree from the remote server; presenting the obtained page tree to a user, analyzing the page data of the page tree, extracting, from the page tree, the position and size of the page object specified by the user, and acquiring corresponding page object data from the remote server; acquiring, from the remote server, resource object data and page content stream data; and acquiring the page selected by the user, and presenting the page.