GD Image Manipulation: Manipulate images using the GD extension

This class can be used to manipulate images using the GD extension.

It can open image files in GIF, JPEG or PNG format and perform several types of operations.

Currently it can generate HTML tags to display the image, resize the image to fit a given width or height, rotate or flip the image horizontally or vertically, apply color effects like sepia, colorize, negate, grayscale, brightness adjust, contrast adjust, edge detect, emboss, blur, smooth, etc..

The processed image can be saved to a given file in different formats.