NEW FEATURE: Fireworksify. Bring in 2021 with fireworks overlay on an emoji. | NEW-ISH FEATURE: You can now force transparency when spinning animated images. Results work great with dark mode on Slack. NOTE: Might not work for every animated image.
Total (or spinny) Emojis as a Service! (TEaaS)
Want to generate your own spinny emoji? Here's the place!