Various embodiments provide techniques for time-based viewing of electronic documents. Examples of electronic documents include websites, webpages, text documents, web-based documents, and so on. In at least some embodiments, a time-based viewer is provided that enables a user to select a particular date and/or time for which to view an electronic document. The user can then navigate through the electronic document and view how the document will appear or did appear at the selected date and/or time. In at least some embodiments, a page container is provided that can include definitions for different versions of a page of an electronic document. According to some embodiments, the different versions of the page can correspond to different publication dates for the page. In some implementations, the time-based viewer can access a page container to retrieve a particular version of a page for display.