A method and system for document analysis and retrieval. A remote host in a first computing system transmits a first portion and at least one additional portion of a document to a web service host in a second computing system. The web service host reconstructs the entire document from the received first portion and at the least one additional portion. After reconstructing the entire document, the web service host implements at least one of extracting, generating, and determining steps. The extracting step extracts text from the entire document to configure the text in a text format. The generating step generates document keys associated with the text from analysis of the text in the text format. The determining step determines from given categories of a document taxonomy, a set of closet categories to the document based on comparing the category keys of the given categories with the document keys.