An open-source GitHub tool lets a Claude Code agent reproduce an animation from a website, video, or GIF. It records the source, analyzes movement frame by frame, generates code, then compares the result with the original. Timing stays within 80 ms by default. Pixel-perfect mode targets a visual mismatch of no more than 2%.

Reanimate supports CSS animations and rendering through Canvas, WebGL or WebGPU, including 3D scenes and particle effects. When it finds differences, the agent corrects the code and checks again. Most animations reportedly need 2-5 cycles.

It runs locally through Bun, Playwright and FFmpeg, with no paid API. The source is open under the MIT license.