I've been playing with RelayThat a ton over the last month or so and am absolutely in love with it.
It helps me create quick graphics that match our branding for use on socials, featured blog post images, testimonials and pretty much whatever I want to throw at it.
The founder Craig has been extremely responsive and helpful whenever I've had questions. He's even jumped on calls with me to see what I think and has already taken suggestions and rolled them into the product. Commitment!