How it works
- Drop an image. The browser uploads it once and creates a job.
- Tune the tabs; every change re-runs a fast downscaled preview.
- Download PNG runs the full-resolution pass in the background.
Chroma key, despill & alpha extract
Drop an image, pull a key from a green, blue, or magenta screen, recover semi-transparent shadows, and export a transparent PNG. Everything runs on the server; nothing is uploaded beyond the source image.
Drag and drop
Drop one image to start
PNG, JPG, WebP, and BMP work. Files are limited to 16 MiB.
Choose file
Key color
"Sample" lets you click a pixel on the preview to pick the key color.
Recover semi-transparent shadows, smoke, and glass on a solid screen.
Brightness of a pure screen area (0-255).
Spill color
Algorithm
Lower it to keep the subject's original colours and only remove part of the spill.
Preview
No image loaded
Drop an image to begin.
Drop an image to see the keyed result here.
Magenta despill
On a magenta screen the key channels are red and blue. The despill engine clamps both to the green reference, the only non-key channel, so every algorithm collapses to the same rule: red and blue can never exceed green.