2D Shadow Baker

A browser-based tool for baking drop shadows onto 2D sprites — no engine required.

Load a PNG, and it runs the sprite through a shader that applies:
- Gaussian blur
- Directional offset (so the shadow falls away from the sprite naturally)
- A configurable opacity gradient — fade the shadow out starting at any point, not just top-to-bottom
- Composite mode (shadow + sprite together) or shadow-only export (transparent sprite, just the shadow)

Everything runs client-side in WebGL2 — nothing is uploaded anywhere, your art stays on your machine.

Originally built for baking static shadows for buildings in a top-down Godot project, so they don't need a real-time shader running every frame — bake once, use the PNG forever.

How to use:
1. Load your sprite PNG
2. Adjust blur, offset, shadow color/opacity, gradient and flip
3. Preview updates live
4. Download the result as a PNG