Landscape by Sprout Social - An interactive tool for social media image resizing
Placid - Use Placid to auto-generate images, videos & PDFs from reusable templates
Stencil - Stencil is a the fastest and simplest way to design images and graphics for digital marketing.
Imagify - Optimize and resize images online and through your CMS.
Social Share Preview - Check social media link previews while you browse
OG IMPACT - A free, open source API for generating social media images