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Use Levels adjustment on an image

Levels transformation allows users to adjust the tonal range of an image to improve its overall contrast and color balance. However, it is important to use it carefully and not overdo the adjustments, as this can result in an unrealistic or unnatural-looking image.

All of your image tones can be adjusted, and you can also make subtle color adjustments. Apply the linear formula a * input + b to the image to adjust image levels.


A (a), B (b)

  • A - Multiplier.
  • B - Offset.

The minimum parameter for A and B is 0 and the maximum is 50. The value of parameter A is 1 by default. The value of parameter B is 0 by default.

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