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ドキュメントCloud InfiniteAPI DocumentationImage ProcessingBasic Image ProcessingProgressive Display

Progressive Display

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最終更新日: 2025-09-08 16:56:46

Feature Overview

Cloud Infinite provides progressive display function for JPG images through the imageMogr2 API.

Authorization Guide

When used with a sub-account, the cos:GetObject permission must be granted. For details, please refer to Cloud Object Storage. For other CI permissions, please refer to Cloud Infinite.

Service Activation

Using this feature will activate Cloud Infinite for you by default and bind a bucket. No role authorization is required, it can be used directly.

Use Limits

Only JPG format images are supported. Non-JPG format images can be converted to JPG using image conversion before performing this operation.
For more restriction details, please see Specifications and Limits.

Fee Description

This API is a paid service. The incurred fees will be collected by Cloud Infinite. For detailed billing information, see Image Processing Fees.
If processing during download is adopted and the download is performed via the public network, the API call will incur Traffic Fees.

API Example

GET /<ObjectKey>?imageMogr2/interlace/<Mode> HTTP/1.1
Host: <BucketName-APPID>.cos.<Region>.myqcloud.com
Date: <GMT Date>
Authorization: <Auth String>
Note:
Authorization: Auth String. For details, see Request Signature documentation.

Processing Parameter Description

Parameter
Meaning
Type
Required
ObjectKey
Object filename, for example folder/sample.gif.
String
Yes
/interlace/
Output in progressive JPG format. Mode can be 0 or 1.
0: Means disable progressive display;
1: Means enable progressive display.
This parameter is valid only when the output image format is JPG. If a non-jpg image format is output, this parameter will be ignored. Default value: 0.
Int
Yes
/ignore-error/1
When processing requests carry this parameter, if operations fail due to oversized files or parameter exceeds limit, it will directly return the original image without reporting an error.
String
No

Practical Example

Save the image with original PNG format as JPG format and set it to progressive display:
http://examples-125xxxxxx.cos.ap-shanghai.myqcloud.com/sample.png?imageMogr2/format/jpg/interlace/1

Important Notes

To prevent unauthorized personnel from accessing and downloading the original image through links that do not carry processing parameters, you can include the processing parameters in the request signature. The processing parameters are the key in the overall parameters, with an empty value. A simple example is provided below (for reference only; the link may be expired and inaccessible). For detailed calculation methods, please refer to Request Signature.
http://examples-1251000004.cos.ap-shanghai.myqcloud.com/sample.jpeg?q-sign-algorithm=sha1&q-ak=**********************************&q-sign-time=1593342360;1593342720&q-key-time=1593342360;1593342720&q-header-list=&q-url-param-list=watermark%252f1%252fimage%252fahr0cdovl2v4yw1wbgvzlteyntewmdawmdqucgljc2gubxlxy2xvdwquy29tl3nodwl5aw4uanbn%252fgravity%252fsoutheast&q-signature=**************************************&watermark/1/image/aHR0cDovL2V4YW1wbGVzLTEyNTEwMDAwMDQucGljc2gubXlxY2xvdWQuY29tL3NodWl5aW4uanBn/gravity/southeast

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