Parameter transform
:
Some methods allow the specification of image transformation parameters. Image transformation is only performed if the Dynamic Imaging Service (DIS) is available for the Commerce Cloud Digital instance, otherwise a standard static content URL is returned. The to-be-transformed image needs to be hosted on Commerce Cloud Digital.
Image transformation parameters are specified as JavaScript object literal. They are translated into URL parameters. See Create Image Transformation URLs.
Type of transformation | Parameters | Description |
---|---|---|
Scale an image |
scaleWidth scaleHeight scaleMode
|
The scaleWidth and scaleHeight parameters
are both integers; setting one of these parameters triggers a
scaling operation. If both are provided, the one that scales the
image less is used to calculate the scale factor. The image is then
automatically cropped accord to the second dimension, with a
centered position of the cropped area. If the parameter would scale
the image larger, only this operation is applied, if the image
remains within acceptable pixel dimensions.
Note:
The |
Overlay an image |
imageX imageY imageURI
|
The imageX and imageY parameters are both
integers. Valid values for these parameters are 0 or greater.
Supported formats are
The If the overlaid image extends over the primary image's boundaries, the overlaid image is cropped so that it fits directly over the primary image. |
Crop an image |
cropX cropY cropWidth cropHeight
|
The cropX , cropY , cropWidth ,
cropHeight parameters are integers. All four parameters
must be specified to trigger a cropping operation.
Valid values for the
Valid values for the |
Format an image | format |
The format parameter specifies the target format of
image. Supported formats are png , jpg , jp2 , and
gif . If no target format is specified, no format
conversion is performed.
The attribute value must reference the source image. Source image's
format is recognized by the file extension which must be
In the generated URL the file extension of the target format is used in the URL path. This is to make sure the image is loaded from an URL with a matching file extension. The source format is provided as URL parameter. |
Adjust image compression quality | quality |
The quality parameter specifies a quality setting for jpg and jp2 images,
and specifies the compression level for png images.
For
For
If the |
Adjust Metadata stripping | strip |
The strip parameter specifies if metadata like EXIF and color profiles is
stripped from the image during transformation.
Valid values for the |
Change background color | bgcolor(color) or bgcolor(color+alpha) |
The bgcolor parameter specifies the background color for images that support transparency
as well as JPEG images when being converted from a format that supports transparency.
Optionally, alpha setting for PNG images are also supported.
FF0000 = Red FF000077 = Red with 50% transparency Alpha values are optional. When the alpha value is omitted, the resulting color is opaque. Alpha values are only valid when the image output format is PNG. |
The following code
var url = product.getImage('thumbnail', 0).getImageURL({scaleWidth: 100, format: 'jpg'});
will produce an image transformation URL like
http://<image server host name>/.../on/demandware.static/.../<path to image>/image.jpg?sw=100&sfrm=png
.