About this tool
Curves Adjuster brings Photoshop-style curves to your browser. Click to add control points, drag to shape the Catmull-Rom spline, and adjust the RGB master curve or individual Red, Green and Blue channels independently.
How it works
- 1Upload your image and select a channel: RGB, R, G or B.
- 2Click anywhere on the curve canvas to add a control point.
- 3Drag points to reshape the tone curve — the image updates live.
- 4Double-click a point to remove it. Hit Reset to restore the identity curve.
Common use cases
- ✓Professional photo colour grading
- ✓Boosting shadows and highlights independently
- ✓Creating cinematic colour looks
- ✓Correcting colour casts per channel
Privacy first. Curves Adjuster runs entirely inside your browser using the HTML5 Canvas API. Your images are never uploaded to any server, stored anywhere or shared with third parties. Everything happens locally on your device.
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