Currently Watimage is a vendor class with multiple image manipulation methods that you can add to any PHP project.
Although it started in 2011 as a CakePHP component that was only able to crop and rotate images.
What Watimage brings to the table:
- Really easy to use image manipulation PHP classes bringing you a lot of features:
    
- Resize and/or crop images.
 - Rotate images.
 - Flip images.
 - Apply multiple effects to your images (blur, negate, grayscale, sepia, vignette, pixelate, emboss, edge detection, colorize, brightness, contrast…).
 - Merge images / apply watermarks.
 - JPEG image auto-orientation from EXIF information.
 - And more! Check out the usage documentation or the API for more information.
 
 - Backwards compatibility with old Watimage class.
 - Method chaining.
 - Testing.
 
About the header image
For the header image the following code has been executed:
$image = new Image('peke.jpg');
$image
    ->sepia(60)
    ->resizeCrop(1100, 400)
    ->vignette(.3)
    ->generate()
;
Both the image and the original can be found under
gh-pages branch,
inside images
folder.