The Google Adsense & IAB compliant Medium Rectangle Ad is 300 by 250 px and all templates on this page were created to fit these dimensions. For 2025 the Medium Rectangle Banner has been one of Google's Top Performing Ads, so it's the perfect way to get your product known! Create standard ad sizes google that will generate leads, all for free. Choose the template that suits your offer and customise by changing the text, logo, graphics, fonts and more!