Highlight Recovery & Shadow Lift
Pull detail back from bright skies and open up dark foregrounds without touching the midtones.
All processing runs in your browser. No file leaves this device.
The gain is weighted by luminance and then applied equally to all three channels. Adjusting channels independently would shift hue — that is what makes skin turn green or skies turn purple in tools that get this wrong.
The masks use smoothstep rather than a hard threshold. A hard cutoff leaves a visible seam running through the transition between adjusted and untouched regions, most obvious on a gradient like a clear sky.