Alibaba Cloud Content Delivery Network (CDN) allows you to resize images. This topic describes how to resize images and provides examples.

Note Image editing is a paid service. It is currently free of charge until further notice.

Parameters

Set the action to resize.

The following table describes the parameters.
Note If one of the preceding parameters is set to a negative value, the image remains in its original size.
Parameter Description Valid value
w Specifies the width to which the image is to be resized. The default value is 0. The total pixels of the image cannot exceed 16,777,216 pixels.
h Specifies the height to which the image is to be resized.
l Specifies the length of the longer side to which the image is to be resized.
s Specifies the length of the shorter side to which the image is to be resized.
fw and fh Specifies the width and height to which the image is to be resized.
p Specifies that the image is resized based on a specific aspect ratio of the original image size. [0,100]

Examples

The following table describes how to resize images.
Feature Description Example
Based on a specific aspect ratio Resize an image based on a specific aspect ratio of the original image size. 
example.com/image01.png?image_process=resize,p_80
Based on conditions Resize an image only when the image is equal to or larger than 1,024,000 bytes. Unit: bytes.
Note The threshold of 1,024,000 bytes is used as an example. You can set the threshold based on your business requirements. 
example.com/image01.png?image_process=resize,l_200/threshold,1024000
Based on the longer side Resize an image based on the specified length of the longer side. 
example.com/image01.png?image_process=resize,l_200
Based on the shorter side. Resize an image based on the specified length of the shorter side. 
example.com/image01.png?image_process=resize,s_200
Based on the width Resize an image based on the specified width. 
example.com/image01.png?image_process=resize,w_200
Based on the height Resize an image based on the specified height. 
example.com/image01.png?image_process=resize,h_200
Based on the specified height and width Resize an image based on the specified width and height. 
example.com/image01.png?image_process=resize,fw_200,fh_200