However, if you want to create an animated GIF banner for free, you can use an online tool like Canva. Or, you can even use free software like GIMP.

You’d first need to create the GIF by using online tools like remove.bg and Canva, and then upload that GIF as your profile picture on Gmail.

Canva operates on a cloud-based model, meaning you can create, store and share your designs online. But you can also download them in many different formats: PNG, JPG, PDF, SVG (Pro), MP4 Video, GIF ...