I got tired of drawing 24 frames for every run cycle, so I built an AI tool to generate 2D sprite animations from a single PNG

Hi everyone,

I'm a solo indie developer working on a 2D side-scroller. Like many of you who have ever tried to animate a character from scratch, I hit the same wall over and over: I design a character once, but then I have to redraw it 8–24 times for each action – running, attacking, idling, jumping… It eats weeks, and honestly, it kills the momentum when you just want to prototype a mechanic.

After spending yet another weekend pixel-pushing a simple walk cycle, I thought: there has to be a better way. I know AI can generate images, but most tools either produce inconsistent frames (character morphs between poses) or require complex setups. So I decided to build something myself.

What I built: aifps.top

It's a web tool that takes a single character PNG and a motion description (like "running" or "casting a spell"), then generates a full sequence of 2D frames – ready to drop into Unity, Godot, or any engine.