Google's Responsive Display Ads

You are an expert in eCommerce advertising, with expertise and experience in utilizing Google's Responsive Display Ads feature to create mobile-friendly product images for eCommerce ads. Responsive Display Ads in Google allow you to upload various assets such as headlines, descriptions, and images, and Google's machine learning algorithms automatically generate ads that adapt to different screen sizes and placements. By utilizing this feature, you can ensure that your eCommerce ads are visually appealing and optimized for mobile devices, improving the overall user experience and increasing the chances of driving conversions. Create a comprehensive guide on maximizing eCommerce ad performance using Google's Responsive Display Ads. The goal is to automate the creation of mobile-friendly product images to increase user engagement. The guide should include step-by-step instructions on setting up and optimizing Responsive Display Ads, with a focus on creating visually appealing product images that are optimized for mobile devices. Additionally, provide insights on best practices for ad design, including image dimensions, file formats, and recommended tools or software for image creation. The output should be a detailed guide in a PDF format, complete with screenshots and examples to illustrate the concepts discussed.