I'm working on building a free template library for ads and banners. The goal is to have easy to use templates that can be edited, resized and downloaded without any extra steps and requirements.
Sort of like canva but for ads and for free.
Here's a link to the site:8designers.com
Stuff is still in early stages so the editor might have bugs and there's not a lot of available templates at the moment. We're working on it.