1. A method for identifying changed content for a document, comprising: generating a parallel cache configured to store multiple versions of a document; receiving an access request to access a current version of the document; and responsive to receiving the access request: identifying a reference point associated with the document, the reference point referencing a prior version of the document stored in the parallel cache, the prior version of the document comprising one or more elements; comparing at least some of the one or more elements associated with the prior version of the document with one or more elements associated with the current version of the document; updating the current version of the document to generate an updated current version of the document, the updating comprising updating the current version of the document with at least one of a visual representation or an auditory representation based upon differences between the one or more elements associated with the prior version of the document and the one or more elements associated with the current version of the document; and presenting the updated current version of the document for display, at least some of the method implemented at least in part via a processing unit; wherein the one or more elements associated with the prior version of the document is stored as a first document object model (DOM) element tree and the one or more elements associated with the current version of the document stored as a second DOM element tree.