Simple Copy
Last updated: 2025-09-25 15:54:53
Use Cases
You can create a copy of an object in Cloud Object Storage (COS) with a simple copy operation. The copy operation creates a copy of a COS object of up to 5 GB in a single request. To copy an object over 5 GB, use the Multipart Copy API. With the copy operation, you can:
Create a copy of an object.
Rename an object by copying it and deleting the original one.
Modify the storage class of an object. You can select the same object key as both the source and target and modify the storage class.
Copy objects across different COS regions.
Modify object metadata. You can select the same object key as both the source and target and modify object metadata.
In the copy operation, the metadata of the source object is inherited by default, while the creation date is subject to the creation date of the target object.
Note:
Unsupported operations for objects in Archive Type (such as ARCHIVE, DEEP ARCHIVE) include initiating a PUT Object - Copy request.
Buckets with MAZ configuration enabled do not support copying MAZ storage type to SAZ storage type.
To copy objects, a sub-account must have these permissions: PutObject, GetObject, and GetObjectACL. For details, see the COS Authorization API.
Usage
Using the COS Console
Note:
Support shortcut keys Ctrl+C and Ctrl+V to copy and paste.
Support shortcut key Shift for multiple selection.
The target path cannot be the same as the source path. Otherwise, the paste will fail.
1. Log in to the COS Console.
2. In the left sidebar, click Bucket List to enter.
3. Find the corresponding bucket and click the bucket name to enter the file list page.
4. Select the object or folder to copy (support multiple selections), click More Actions > Copy File.
5. After the prompt displayed for successful copy, select the target path, click More Actions > Paste to paste.
For example, paste under the target folder in a bucket.
Using REST API/SDK
You can call the object copy method setting in the SDK. For details, see the following language SDK documents:
Tools
You can directly copy objects using the following tools:
COSCMD
COSCLI
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