Crop
Crop any part of an image by choosing a new width and height plus starting point for the crop.
Choose the new width and/or height - if you omit one, it will default to 100% of the image.
Use 'cw' to specify the new width in pixels or percent (%). The example below was 400px and has been cropped to 300px width:
https://demo.sirv.com/looks.jpg?cw=300
Use 'ch' to specify the new height in pixels or percent (%). The example below has been cropped to 100px height:
https://demo.sirv.com/looks.jpg?ch=100
Unless explicitly stated, cropping will start from the top left of the image. This can be adjusted with 'cx' and 'cy' options. These 2 options will move the point of the crop in a specified number of pixels from the top left. For example, the cropping starts at 107 pixels across and 17 pixels down:
https://demo.sirv.com/looks.jpg?ch=166&cw=166&cx=107&cy=17
You can crop around the center of the image by setting cx and cy to 'center':
https://demo.sirv.com/looks.jpg?ch=250&cw=190&cx=center&cy=center
This image is cropped around the center of the image to 50% of its original height, 100% of its original width:
https://demo.sirv.com/looks.jpg?ch=50%&cw=100%&cy=center&cx=center
Cropping can be combined with resizing to create an image of any size and shape:
https://demo.sirv.com/looks.jpg?w=50%&h=50%&ch=120&cw=120&cx=40&cy=0
