Amazon Simple Storage Service
API Reference (API Version 2006-03-01)

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CopyObject

Creates a copy of an object that is already stored in Amazon S3.

Note

You can store individual objects of up to 5 TB in Amazon S3. You create a copy of your object up to 5 GB in size in a single atomic operation using this API. However, for copying an object greater than 5 GB, you must use the multipart upload Upload Part - Copy API. For conceptual information, see Copy Object Using the REST Multipart Upload API.

When copying an object, you can preserve all metadata (default) or specify new metadata. However, the ACL is not preserved and is set to private for the user making the request. To override the default ACL setting, specify a new ACL when generating a copy request. For more information, see Using ACLs.

Important

Amazon S3 Transfer Acceleration does not support cross-region copies. If you request a cross-region copy using a Transfer Acceleration endpoint, you get a 400 Bad Request error. For more information about transfer acceleration, see Transfer Acceleration.

All copy requests must be authenticated. Additionally, you must have read access to the source object and write access to the destination bucket. For more information, see REST Authentication. Both the Region that you want to copy the object from and the Region that you want to copy the object to must be enabled for your account.

To only copy an object under certain conditions, such as whether the Etag matches or whether the object was modified before or after a specified date, use the request parameters x-amz-copy-source-if-match, x-amz-copy-source-if-none-match, x-amz-copy-source-if-unmodified-since, or x-amz-copy-source-if-modified-since.

Note

All headers with the x-amz- prefix, including x-amz-copy-source, must be signed.

You can use this operation to change the storage class of an object that is already stored in Amazon S3 using the StorageClass parameter. For more information, see Storage Classes.

The source object that you are copying can be encrypted or unencrypted. If the source object is encrypted, it can be encrypted by server-side encryption using AWS-managed encryption keys or by using a customer-provided encryption key. When copying an object, you can request that Amazon S3 encrypt the target object by using either the AWS-managed encryption keys or by using your own encryption key. You can do this regardless of the form of server-side encryption that was used to encrypt the source, or even if the source object was not encrypted. For more information about server-side encryption, see Using Server-Side Encryption.

A copy request might return an error when Amazon S3 receives the copy request or while Amazon S3 is copying the files. If the error occurs before the copy operation starts, you receive a standard Amazon S3 error. If the error occurs during the copy operation, the error response is embedded in the 200 OK response. This means that a 200 OK response can contain either a success or an error. Design your application to parse the contents of the response and handle it appropriately.

If the copy is successful, you receive a response with information about the copied object.

Note

If the request is an HTTP 1.1 request, the response is chunk encoded. If it were not, it would not contain the content-length, and you would need to read the entire body.

Consider the following when using request headers:

  • Consideration 1 – If both the x-amz-copy-source-if-match and x-amz-copy-source-if-unmodified-since headers are present in the request and evaluate as follows, Amazon S3 returns 200 OK and copies the data:

    • x-amz-copy-source-if-match condition evaluates to true

    • x-amz-copy-source-if-unmodified-since condition evaluates to false

  • Consideration 2 – If both of the x-amz-copy-source-if-none-match and x-amz-copy-source-if-modified-since headers are present in the request and evaluate as follows, Amazon S3 returns the 412 Precondition Failed response code:

    • x-amz-copy-source-if-none-match condition evaluates to false

    • x-amz-copy-source-if-modified-since condition evaluates to true

The copy request charge is based on the storage class and Region you specify for the destination object. For pricing information, see Amazon S3 Pricing.

Following are other considerations when using CopyObject:

Versioning

By default, x-amz-copy-source identifies the current version of an object to copy. (If the current version is a delete marker, Amazon S3 behaves as if the object was deleted.) To copy a different version, use the versionId subresource.

If you enable versioning on the target bucket, Amazon S3 generates a unique version ID for the object being copied. This version ID is different from the version ID of the source object. Amazon S3 returns the version ID of the copied object in the x-amz-version-id response header in the response.

If you do not enable versioning or suspend it on the target bucket, the version ID that Amazon S3 generates is always null.

If the source object's storage class is GLACIER, then you must restore a copy of this object before you can use it as a source object for the copy operation. For more information, see RestoreObject.

Access Permissions

When copying an object, you can optionally specify the accounts or groups that should be granted specific permissions on the new object. There are two ways to grant the permissions using the request headers:

  • Specify a canned ACL with the x-amz-acl request header. For more information, see Canned ACL.

  • Specify access permissions explicitly with the x-amz-grant-read, x-amz-grant-read-acp, x-amz-grant-write-acp, and x-amz-grant-full-control headers. These parameters map to the set of permissions that Amazon S3 supports in an ACL. For more information, see Access Control List (ACL) Overview.

You can use either a canned ACL or specify access permissions explicitly. You cannot do both.

Server-Side- Encryption-Specific Request Headers

To encrypt the target object, you must provide the appropriate encryption-related request headers. The one you use depends on whether you want to use AWS-managed encryption keys or provide your own encryption key.

  • To encrypt the target object using server-side encryption with an AWS-managed encryption key, provide the following request headers, as appropriate.

    • x-amz-server-side​-encryption

    • x-amz-server-side-encryption-aws-kms-key-id

    • x-amz-server-side-encryption-context

    Note

    If you specify x-amz-server-side-encryption:aws:kms, but don't provide x-amz-server-side- encryption-aws-kms-key-id, Amazon S3 uses the default AWS KMS key to protect the data.

    Important

    All GET and PUT requests for an object protected by AWS KMS fail if you don't make them with SSL or by using SigV4.

    For more information on Server-Side Encryption with Amazon KMS-Managed Keys (SSE-KMS), see Protecting Data Using Server-Side Encryption with AWS KMS-Managed Keys.

  • To encrypt the target object using server-side encryption with an encryption key that you provide, use the following headers.

    • x-amz-server-side​-encryption​-customer-algorithm

    • x-amz-server-side​-encryption​-customer-key

    • x-amz-server-side​-encryption​-customer-key-MD5

  • If the source object is encrypted using server-side encryption with customer-provided encryption keys, you must use the following headers.

    • x-amz-copy-source​-server-side​-encryption​-customer-algorithm

    • x-amz-copy-source​-server-side​-encryption​-customer-key

    • x-amz-copy-source-​server-side​-encryption​-customer-key-MD5

    For more information on Server-Side Encryption with Amazon KMS-Managed Keys (SSE-KMS), see Protecting Data Using Server-Side Encryption with AWS KMS-Managed Keys.

Access-Control-List (ACL)-Specific Request Headers

You also can use the following access control–related headers with this operation. By default, all objects are private. Only the owner has full access control. When adding a new object, you can grant permissions to individual AWS accounts or to predefined groups defined by Amazon S3. These permissions are then added to the Access Control List (ACL) on the object. For more information, see Using ACLs. With this operation, you can grant access permissions using one of the following two methods:

  • Specify a canned ACL (x-amz-acl) — Amazon S3 supports a set of predefined ACLs, known as canned ACLs. Each canned ACL has a predefined set of grantees and permissions. For more information, see Canned ACL.

  • Specify access permissions explicitly — To explicitly grant access permissions to specific AWS accounts or groups, use the following headers. Each header maps to specific permissions that Amazon S3 supports in an ACL. For more information, see Access Control List (ACL) Overview. In the header, you specify a list of grantees who get the specific permission. To grant permissions explicitly use:

    • x-amz-grant-read

    • x-amz-grant-write

    • x-amz-grant-read-acp

    • x-amz-grant-write-acp

    • x-amz-grant-full-control

    You specify each grantee as a type=value pair, where the type is one of the following:

    • emailAddress – if the value specified is the email address of an AWS account

    • id – if the value specified is the canonical user ID of an AWS account

    • uri – if you are granting permissions to a predefined group

    For example, the following x-amz-grant-read header grants the AWS accounts identified by email addresses permissions to read object data and its metadata:

    x-amz-grant-read: emailAddress="xyz@amazon.com", emailAddress="abc@amazon.com"

The following operation are related to CopyObject

For more information, see Copying Objects.

Request Syntax

PUT /Key+ HTTP/1.1 Host: Bucket.s3.amazonaws.com x-amz-acl: ACL Cache-Control: CacheControl Content-Disposition: ContentDisposition Content-Encoding: ContentEncoding Content-Language: ContentLanguage Content-Type: ContentType x-amz-copy-source: CopySource x-amz-copy-source-if-match: CopySourceIfMatch x-amz-copy-source-if-modified-since: CopySourceIfModifiedSince x-amz-copy-source-if-none-match: CopySourceIfNoneMatch x-amz-copy-source-if-unmodified-since: CopySourceIfUnmodifiedSince Expires: Expires x-amz-grant-full-control: GrantFullControl x-amz-grant-read: GrantRead x-amz-grant-read-acp: GrantReadACP x-amz-grant-write-acp: GrantWriteACP x-amz-metadata-directive: MetadataDirective x-amz-tagging-directive: TaggingDirective x-amz-server-side-encryption: ServerSideEncryption x-amz-storage-class: StorageClass x-amz-website-redirect-location: WebsiteRedirectLocation x-amz-server-side-encryption-customer-algorithm: SSECustomerAlgorithm x-amz-server-side-encryption-customer-key: SSECustomerKey x-amz-server-side-encryption-customer-key-MD5: SSECustomerKeyMD5 x-amz-server-side-encryption-aws-kms-key-id: SSEKMSKeyId x-amz-server-side-encryption-context: SSEKMSEncryptionContext x-amz-copy-source-server-side-encryption-customer-algorithm: CopySourceSSECustomerAlgorithm x-amz-copy-source-server-side-encryption-customer-key: CopySourceSSECustomerKey x-amz-copy-source-server-side-encryption-customer-key-MD5: CopySourceSSECustomerKeyMD5 x-amz-request-payer: RequestPayer x-amz-tagging: Tagging x-amz-object-lock-mode: ObjectLockMode x-amz-object-lock-retain-until-date: ObjectLockRetainUntilDate x-amz-object-lock-legal-hold: ObjectLockLegalHoldStatus

URI Request Parameters

The request requires the following URI parameters.

Bucket

The name of the destination bucket.

Cache-Control

Specifies caching behavior along the request/reply chain.

Content-Disposition

Specifies presentational information for the object.

Content-Encoding

Specifies what content encodings have been applied to the object and thus what decoding mechanisms must be applied to obtain the media-type referenced by the Content-Type header field.

Content-Language

The language the content is in.

Content-Type

A standard MIME type describing the format of the object data.

Expires

The date and time at which the object is no longer cacheable.

Key

The key of the destination object.

Length Constraints: Minimum length of 1.

x-amz-acl

The canned ACL to apply to the object.

Valid Values: private | public-read | public-read-write | authenticated-read | aws-exec-read | bucket-owner-read | bucket-owner-full-control

x-amz-copy-source

The name of the source bucket and key name of the source object, separated by a slash (/). Must be URL-encoded.

Pattern: \/.+\/.+

x-amz-copy-source-if-match

Copies the object if its entity tag (ETag) matches the specified tag.

x-amz-copy-source-if-modified-since

Copies the object if it has been modified since the specified time.

x-amz-copy-source-if-none-match

Copies the object if its entity tag (ETag) is different than the specified ETag.

x-amz-copy-source-if-unmodified-since

Copies the object if it hasn't been modified since the specified time.

x-amz-copy-source-server-side-encryption-customer-algorithm

Specifies the algorithm to use when decrypting the source object (e.g., AES256).

x-amz-copy-source-server-side-encryption-customer-key

Specifies the customer-provided encryption key for Amazon S3 to use to decrypt the source object. The encryption key provided in this header must be one that was used when the source object was created.

x-amz-copy-source-server-side-encryption-customer-key-MD5

Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure the encryption key was transmitted without error.

x-amz-grant-full-control

Gives the grantee READ, READ_ACP, and WRITE_ACP permissions on the object.

x-amz-grant-read

Allows grantee to read the object data and its metadata.

x-amz-grant-read-acp

Allows grantee to read the object ACL.

x-amz-grant-write-acp

Allows grantee to write the ACL for the applicable object.

x-amz-metadata-directive

Specifies whether the metadata is copied from the source object or replaced with metadata provided in the request.

Valid Values: COPY | REPLACE

x-amz-object-lock-legal-hold

Specifies whether you want to apply a Legal Hold to the copied object.

Valid Values: ON | OFF

x-amz-object-lock-mode

The Object Lock mode that you want to apply to the copied object.

Valid Values: GOVERNANCE | COMPLIANCE

x-amz-object-lock-retain-until-date

The date and time when you want the copied object's Object Lock to expire.

x-amz-request-payer

Confirms that the requester knows that she or he will be charged for the request. Bucket owners need not specify this parameter in their requests. Documentation on downloading objects from requester pays buckets can be found at http://docs.aws.amazon.com/AmazonS3/latest/dev/ObjectsinRequesterPaysBuckets.html

Valid Values: requester

x-amz-server-side-encryption

The Server-side encryption algorithm used when storing this object in S3 (e.g., AES256, aws:kms).

Valid Values: AES256 | aws:kms

x-amz-server-side-encryption-aws-kms-key-id

Specifies the AWS KMS key ID to use for object encryption. All GET and PUT requests for an object protected by AWS KMS will fail if not made via SSL or using SigV4. Documentation on configuring any of the officially supported AWS SDKs and CLI can be found at http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingAWSSDK.html#specify-signature-version

x-amz-server-side-encryption-context

Specifies the AWS KMS Encryption Context to use for object encryption. The value of this header is a base64-encoded UTF-8 string holding JSON with the encryption context key-value pairs.

x-amz-server-side-encryption-customer-algorithm

Specifies the algorithm to use to when encrypting the object (e.g., AES256).

x-amz-server-side-encryption-customer-key

Specifies the customer-provided encryption key for Amazon S3 to use in encrypting data. This value is used to store the object and then it is discarded; Amazon does not store the encryption key. The key must be appropriate for use with the algorithm specified in the x-amz-server-side​-encryption​-customer-algorithm header.

x-amz-server-side-encryption-customer-key-MD5

Specifies the 128-bit MD5 digest of the encryption key according to RFC 1321. Amazon S3 uses this header for a message integrity check to ensure the encryption key was transmitted without error.

x-amz-storage-class

The type of storage to use for the object. Defaults to 'STANDARD'.

Valid Values: STANDARD | REDUCED_REDUNDANCY | STANDARD_IA | ONEZONE_IA | INTELLIGENT_TIERING | GLACIER | DEEP_ARCHIVE

x-amz-tagging

The tag-set for the object destination object this value must be used in conjunction with the TaggingDirective. The tag-set must be encoded as URL Query parameters

x-amz-tagging-directive

Specifies whether the object tag-set are copied from the source object or replaced with tag-set provided in the request.

Valid Values: COPY | REPLACE

x-amz-website-redirect-location

If the bucket is configured as a website, redirects requests for this object to another object in the same bucket or to an external URL. Amazon S3 stores the value of this header in the object metadata.

Request Body

The request does not have a request body.

Response Syntax

HTTP/1.1 200 x-amz-expiration: Expiration x-amz-copy-source-version-id: CopySourceVersionId x-amz-version-id: VersionId x-amz-server-side-encryption: ServerSideEncryption x-amz-server-side-encryption-customer-algorithm: SSECustomerAlgorithm x-amz-server-side-encryption-customer-key-MD5: SSECustomerKeyMD5 x-amz-server-side-encryption-aws-kms-key-id: SSEKMSKeyId x-amz-server-side-encryption-context: SSEKMSEncryptionContext x-amz-request-charged: RequestCharged <?xml version="1.0" encoding="UTF-8"?> <CopyObjectResult> <ETag>string</ETag> <LastModified>timestamp</LastModified> </CopyObjectResult>

Response Elements

If the action is successful, the service sends back an HTTP 200 response.

The response returns the following HTTP headers.

x-amz-copy-source-version-id

Version of the copied object in the destination bucket.

x-amz-expiration

If the object expiration is configured, the response includes this header.

x-amz-request-charged

If present, indicates that the requester was successfully charged for the request.

Valid Values: requester

x-amz-server-side-encryption

The Server-side encryption algorithm used when storing this object in S3 (e.g., AES256, aws:kms).

Valid Values: AES256 | aws:kms

x-amz-server-side-encryption-aws-kms-key-id

If present, specifies the ID of the AWS Key Management Service (KMS) master encryption key that was used for the object.

x-amz-server-side-encryption-context

If present, specifies the AWS KMS Encryption Context to use for object encryption. The value of this header is a base64-encoded UTF-8 string holding JSON with the encryption context key-value pairs.

x-amz-server-side-encryption-customer-algorithm

If server-side encryption with a customer-provided encryption key was requested, the response will include this header confirming the encryption algorithm used.

x-amz-server-side-encryption-customer-key-MD5

If server-side encryption with a customer-provided encryption key was requested, the response will include this header to provide round trip message integrity verification of the customer-provided encryption key.

x-amz-version-id

Version ID of the newly created copy.

The following data is returned in XML format by the service.

CopyObjectResult

Root level tag for the CopyObjectResult parameters.

Required: Yes

ETag

Returns the ETag of the new object. The ETag reflects only changes to the contents of an object, not its metadata. The source and destination ETag is identical for a successfully copied object.

Type: String

LastModified

Returns the date that the object was last modified.

Type: Timestamp

Examples

Example Request

This example copies my-image.jpg into the bucket bucket, with the key name my-second-image.jpg.

PUT /my-second-image.jpg HTTP/1.1 Host: bucket.s3.amazonaws.com Date: Wed, 28 Oct 2009 22:32:00 GMT x-amz-copy-source: /bucket/my-image.jpg Authorization: authorization string

Example Response

HTTP/1.1 200 OK x-amz-id-2: eftixk72aD6Ap51TnqcoF8eFidJG9Z/2mkiDFu8yU9AS1ed4OpIszj7UDNEHGran x-amz-request-id: 318BC8BC148832E5 x-amz-copy-source-version-id: 3/L4kqtJlcpXroDTDmJ+rmSpXd3dIbrHY+MTRCxf3vjVBH40Nr8X8gdRQBpUMLUo x-amz-version-id: QUpfdndhfd8438MNFDN93jdnJFkdmqnh893 Date: Wed, 28 Oct 2009 22:32:00 GMT Connection: close Server: AmazonS3 <CopyObjectResult> <LastModified>2009-10-28T22:32:00</LastModified> <ETag>"9b2cf535f27731c974343645a3985328"</ETag> <CopyObjectResult>

Sample Request: Copying a Specified Version of an Object

The following request copies the my-image.jpg key with the specified version ID, copies it into the bucket bucket, and gives it the my-second-image.jpg key.

PUT /my-second-image.jpg HTTP/1.1 Host: bucket.s3.amazonaws.com Date: Wed, 28 Oct 2009 22:32:00 GMT x-amz-copy-source: /bucket/my-image.jpg?versionId=3/L4kqtJlcpXroDTDmJ+rmSpXd3dIbrHY+MTRCxf3vjVBH40Nr8X8gdRQBpUMLUo Authorization: authorization string

Success Response: Copying a Versioned Object into a Version-enabled Bucket

The following response shows that an object was copied into a target bucket where versioning is enabled.

HTTP/1.1 200 OK x-amz-id-2: eftixk72aD6Ap51TnqcoF8eFidJG9Z/2mkiDFu8yU9AS1ed4OpIszj7UDNEHGran x-amz-request-id: 318BC8BC148832E5 x-amz-version-id: QUpfdndhfd8438MNFDN93jdnJFkdmqnh893 x-amz-copy-source-version-id: 09df8234529fjs0dfi0w52935029wefdj Date: Wed, 28 Oct 2009 22:32:00 GMT Connection: close Server: AmazonS3 <?xml version="1.0" encoding="UTF-8"?> <CopyObjectResult> <LastModified>2009-10-28T22:32:00</LastModified> <ETag>"9b2cf535f27731c974343645a3985328"</ETag> <CopyObjectResult>

Success Response: Copying a Versioned Object into a Version-suspended Bucket

The following response shows that an object was copied into a target bucket where versioning is suspended. The parameter VersionId does not appear.

HTTP/1.1 200 OK x-amz-id-2: eftixk72aD6Ap51TnqcoF8eFidJG9Z/2mkiDFu8yU9AS1ed4OpIszj7UDNEHGran x-amz-request-id: 318BC8BC148832E5 x-amz-copy-source-version-id: 3/L4kqtJlcpXroDTDmJ+rmSpXd3dIbrHY+MTRCxf3vjVBH40Nr8X8gdRQBpUMLUo Date: Wed, 28 Oct 2009 22:32:00 GMT Connection: close Server: AmazonS3 <?xml version="1.0" encoding="UTF-8"?> <CopyObjectResult> <LastModified>2009-10-28T22:32:00</LastModified> <ETag>"9b2cf535f27731c974343645a3985328"</ETag> <CopyObjectResult>

Sample: Copy from Unencrypted Object to an Object Encrypted with Server-side Encryption with Customer-provided Encryption Keys

The following example specifies the HTTP PUT header to copy an unencrypted object to an object encrypted with server-side encryption with customer-provided encryption keys (SSE-C).

PUT /exampleDestinationObject HTTP/1.1 Host: example-destination-bucket.s3.amazonaws.com x-amz-server-side-encryption-customer-algorithm: AES256 x-amz-server-side-encryption-customer-key: Base64(YourKey) x-amz-server-side-encryption-customer-key-MD5 : Base64(MD5(YourKey)) x-amz-metadata-directive: metadata_directive x-amz-copy-source: /example_source_bucket/exampleSourceObject x-amz-copy-source-if-match: etag x-amz-copy-source-if-none-match: etag x-amz-copy-source-if-unmodified-since: time_stamp x-amz-copy-source-if-modified-since: time_stamp <request metadata> Authorization: authorization string (see Authenticating Requests (AWS Signature Version 4)) Date: date

Sample: Copy from an Object Encrypted with SSE-C to an Object Encrypted with SSE-C

The following example specifies the HTTP PUT header to copy an object encrypted with server-side encryption with customer-provided encryption keys to an object encrypted with server-side encryption with customer-provided encryption keys for key rotation.

PUT /exampleDestinationObject HTTP/1.1 Host: example-destination-bucket.s3.amazonaws.com x-amz-server-side-encryption-customer-algorithm: AES256 x-amz-server-side-encryption-customer-key: Base64(NewKey) x-amz-server-side-encryption-customer-key-MD5: Base64(MD5(NewKey)) x-amz-metadata-directive: metadata_directive x-amz-copy-source: /source_bucket/sourceObject x-amz-copy-source-if-match: etag x-amz-copy-source-if-none-match: etag x-amz-copy-source-if-unmodified-since: time_stamp x-amz-copy-source-if-modified-since: time_stamp x-amz-copy-source-server-side-encryption-customer-algorithm: AES256 x-amz-copy-source-server-side-encryption-customer-key: Base64(OldKey) x-amz-copy-source-server-side-encryption-customer-key-MD5: Base64(MD5(OldKey)) <request metadata> Authorization: authorization string (see Authenticating Requests (AWS Signature Version 4)) Date: date

See Also

For more information about using this API in one of the language-specific AWS SDKs, see the following: