Abstract: A method and apparatus for monitoring digital advertising campaigns are disclosed. An example apparatus includes an application monitoring apparatus operating in relation to a web browser on a panelist device. The apparatus includes a database comprising advertisement identification rules configured to identify advertisements within webpage code. The application monitoring apparatus also includes a browser interface configured to analyze webpages accessed by a browser and apply the advertisement identification rules to determine website code that is associated with the advertisement. Conditioned upon detecting an advertisement, the browser interface is configured to copy a portion of the website code that is associated with the advertisement including a creative file source of the advertisement. The browser interface also stores the copied website code to a log file and transmits the log file to a monitoring system.