Cropping with the ImageResizer

The URL syntax for cropping is crop=x1,y1,x2,y2. The coordinates are relative to the top-left corner of the image - if they are positive values.

If X2 or Y2 are 0 or less, they are relative to the bottom-right corner. This allows easy trimming without knowing the size of the image.

For example, crop=0,0,0,0 leaves the image uncropped. crop=10,10,-10,-10 removes 10 pixels from all edges of the image.