I make fractal art with GLSL and got tired of fighting Shadertoy's limits when I wanted to actually finish and export pieces. So I built the tool I wanted: ShaderKit runs in the browser, fully ShaderToy-compatible, but adds the export pipeline that was missing for me.

- Loop examination mode: visualizes the transition point of a looping shader in slow motion so you can see exactly where it breaks. X-time remapping helps debug discontinuities by mapping time to the x coordinate, this way you can see literally if the loop is seamless or not, if you see any seams, its not seamless. This is what I needed most for my own work.

- Cloud rendering up to 8K with supersampling

- A GIF exporter allowing for setting custom color palettes and choice of dithering algorithm

The main editor and features are free. Cloud rendering is paid because GPU time costs money. There's an optional Claude-based vibe-mode as well.

Would especially love feedback on the loop tools from anyone who writes seamless shader loops, that's the part of the problem I think is most under-served.

https://shaderkit.com