Canva is a free online graphic design platform that allows users to quickly and easily create professional looking photos and visual assets. Some key features of Canva include templates for social media posts, marketing materials, and event invitations. Users can customize templates by adjusting sizes, adding images, text, and other design elements. Photos can be uploaded or selected from Canva's library and then edited by adjusting filters, transparency, and more. The platform makes photo creation simple, quick, and free to use.