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Object Storage

Image Scaling

Last Updated：2021-03-24

Overview

This article describes how to scale up and down the photo.

Image Scaling Parameter

Name of action: resize

Parameter	Value	Description
m	lfit, mfit, fill, pad, fixed	Sets the width of the thumbnail in px. The lfit type must be set to w or h, and the fill fixed type must be set to w and h at the same time. lfit: Scale the image to the largest scale that can be placed in a rectangle with width and height of w and h. mfit: Scale the image to the smallest scale that can be placed in a rectangle with width and height of w and h. fill: Crop the image part in the rectangles with width and height of w and h on the basis of mfit. pad: Fill the blank part except the image in the rectangles with width and height of w and h on the basis of lfit. fixed: Forces scaling to the specified width (w) and height (h).
w	1-4096	Sets the height of the thumbnail in px. The lfit type must be set to w or h, and the fill fixed type must be set to w and h at the same time.
h	1-4096	Sets the height of the thumbnail in px. The lfit type must be set to w or h, and the fill fixed type must be set to w and h at the same time.
limit	0,1	Set whether to limit the size of the image to be resized not to exceed the size of the original image, where 0 represents unlimited, and 1 represents limited. It is not required, and the number 0 represents unlimited.
color	8-digit hex color code	Designate the fill color of the type, where the first six bits represent RGB color, such as ffffff; and the last two bits represent Alpha channel, which can be omitted, and if omitted, it means opaque. It is not required, and the default color is black.

Example

Scale the photo proportionally, the maximum width of the scaled image is 200, and the maximum height is 100.
https://doc.bce.baidu.com/bce-documentation/BOS/image.jpg?x-bce-process=image/resize,m_lfit,w_200,h_100
Scale the photo proportionally, the scaled image has a maximum width of 200 and a maximum height of 100, and fill the part of the 200*100 rectangle that is not full of the image with a red background .
https://doc.bce.baidu.com/bce-documentation/BOS/image.jpg?x-bce-process=image/resize,m_pad,w_200,h_100,color_FF0000
Scale the photo proportionally, the minimum width of the scaled image is 200, and the minimum height is 100.
https://doc.bce.baidu.com/bce-documentation/BOS/image.jpg?x-bce-process=image/resize,m_mfit,w_200,h_100
Scale the image evenly with the minimum width of the zoomed image of 200, and the minimum height of 100, and cut the part of image that beyond the size of 200 * 100.
https://doc.bce.baidu.com/bce-documentation/BOS/image.jpg?x-bce-process=image/resize,m_fill,w_200,h_100
Force scaling width 200, height 100 .
https://doc.bce.baidu.com/bce-documentation/BOS/image.jpg?x-bce-process=image/resize,m_fixed,w_200,h_100

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