Transforms

Rotate

Rotates in counterclockwise sense the image of 90, 180 or 270 degrees.

Flip

Mirrors horizontally or vertically the image.

Transpose

This transformation treats the image as a matrix and transposes its values, this means:
A[i, j] = A[j, i]

Original

Transposed

Scale

Resamples the image to obtain a bigger or a smaller image (scaling changes the number of pixels). It can be done independenlty for width and height or in an uniform manner.

Crop

Removes pixel from top, left, bottom or right returning a smaller image.