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Color Curves Editor - Online Adjust RGB & Brightness

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Color Curves Editor - Online Adjust RGB & Brightness

Interactive RGB curve editing with brightness, contrast, and real‑time preview. Fine‑tune each channel independently.

RGB Curves
Red Channel
Green Channel
Blue Channel

Upload an image or load the sample to start editing.

Presets:

Frequently Asked Questions

A color curve editor remaps tonal values of an image. The horizontal axis represents input brightness (0–255), and the vertical axis output brightness. Control points define a curve for each RGB channel, enabling fine-tuned color and exposure adjustments.

Each channel curve has five draggable points. Click and drag them vertically to change the output brightness at that input level. The curve interpolates linearly between points. Use the presets for quick starting points.

Brightness adds or subtracts a constant value to every pixel after curve mapping, globally lightening or darkening the image without affecting contrast.

Contrast multiplies the distance from mid‑gray (128). Increasing contrast makes darks darker and lights lighter; decreasing it flattens the image. This is applied after the curve and brightness.

Yes, click the "Download Result" button to save the final image as a PNG file. All current curve, brightness, and contrast settings will be applied.
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