Methods and systems for enabling images on a web page are provided. In example embodiments, a selection of an event external to a website of a publisher that will trigger display of an image that corresponds to the event is received. Information regarding a format for the image is received. Prior to the event occurring, code for the image to be displayed on a web page of the web site associated with the publisher is generated. The code is generated using the information regarding the format for the image. An indication of an occurrence of the event external to the web site is received. The code is triggered to display the image on the web page in response to the receiving the indication of the occurrence of the event.