Question: Is there a platform that can help me generate multiple display banners in different sizes with minimal effort?

If you're looking for a tool to create a variety of display banners in different sizes with the least amount of work, BannerGate could be a good option. It lets you create animated HTML5 display banners with no HTML coding skills, offering a codeless, intuitive, and customizable way to create high-quality banners. The service works by typing in a prompt, setting up banner options, then downloading a set of banners in various sizes.

Another option is Bannerbear, an automation tool for generating visual content like social media graphics, ecommerce banners and videos. It offers no-code automated workflows and can be connected to services like Zapier and Airtable. Bannerbear's template editor and API lets people generate images and videos rapidly, so it's good for marketers and content creators who want to automate tedious chores.

For a more advanced setup, Robolly offers an automated image, video and PDF generation service. It uses a template editor and cloud-based tools to create customized content in batches and on demand. Robolly can generate multiple images, create multi-page PDFs, and accommodate team collaboration, so it's good for people who need to create a wide variety of visual content in different sizes and formats.