The Google Publisher tag is inserted in between the tag of the HTML source code of your web page. Rendering will be placed in the / This first segment of code contains the boilerplate or standard code that calls the library for GPT to function. Check out the screen to view the code: Styling: You can also put in style overrides for your ad through this code snippet sample: Sizes and Targeting: The code also provides provisions for targeting specifics, ad sizes, and network codes. Rendering: