Some embodiments provide an adblocking bypass system for ensuring that advertisements are loaded and presented on a user device running one or more adblockers. The adblocking bypass system is comprised of a bypass loader and a bypass proxy. The bypass loader is a component that is embedded within content publisher content. When the content publisher content is downloaded and parsed by a user device, the bypass loader executes by detecting the presence of any adblocker on the user device. If found, the bypass loader forwards any blocked advertisement calls to the bypass proxy. The bypass proxy retrieves the requested advertisements and returns them to the bypass loader which then reintroduces the advertisements in final content presentation or rendering. The bypass proxy may also modify the content publisher content by replacing any blocked advertisement calls embedded within the content with calls to the bypass proxy.