PHP Script Codes > Imaging api
Features
Per pixel filters: Brightness, Colorize, Color invert, Contrast, Gamma and Gray scale.
Blend modes: Average, Color burn, Darken, Difference, Exclusion, Hard light, Lighten, Multiply, Multiply hard light, Negotation, Overlay, Screen, Screen hard light, Soft light, Stamp, Vivid light and Xor.