Dynamic web content personalization may be used to alter a web page such that two different people who view that web page do not see the exact same content on that page. The present disclosure includes techniques that allow a web page to be structured, via underlying source code, so that content can be dynamically generated based on a user transaction history. Further, dynamic content customization can effectively change the layout and functionality of a web page in ways not previously contemplated. For example, different control elements may become accessible based on a particular contextual user profile assigned to a user based on a transaction history. Modular content modules may also have a different appearance for different users.