Design online ads
Google Web Designer is an advanced web application that lets you design and build HTML5 advertisements and other web content using an integrated visual and code interface. Using Google Web Designer's Design view, you can create content using drawing tools, text, and 3D objects, and you can animate objects and events on a timeline.
Once you're done creating your content, Web Designer provides the tools you need to make your layout responsive across different screen sizes, or add dynamic bindings so you can personalize your ads for your audience.
Add media and interactivity
Google Web Designer also provides a set of components that let you add image galleries, videos, maps, and other functionality to your websites and advertisements.
All for free
Google Web Designer is free to download, and free to use.