Adds an object to a bucket. You must have WRITE permissions on a bucket to add an object to it.
Amazon S3 never adds partial objects; if you receive a success response, Amazon S3 added the entire object to the bucket.
Amazon S3 is a distributed system. If it receives multiple write requests for the same object simultaneously, it overwrites all but the last object written. Amazon S3 does not provide object locking; if you need this, make sure to build it into your application layer or use versioning instead.
To ensure that data is not corrupted traversing the network, use the Content-MD5 header. When you use this header, Amazon S3 checks the object against the provided MD5 value and, if they do not match, returns an error. Additionally, you can calculate the MD5 while putting an object to Amazon S3 and compare the returned ETag to the calculated MD5 value.
The Content-MD5 header is required for any request to upload an object with a retention period configured using Amazon S3 Object Lock. For more information about Amazon S3 Object Lock, see Amazon S3 Object Lock Overview in the Amazon Simple Storage Service Developer Guide.
You can optionally request server-side encryption. With server-side encryption, Amazon S3 encrypts your data as it writes it to disks in its data centers and decrypts the data when you access it. You have the option to provide your own encryption key or use AWS managed encryption keys. For more information, see Using Server-Side Encryption.
Access Control List (ACL)-Specific Request Headers
You can use headers to grant ACL- based permissions. 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 ACL on the object. For more information, see Access Control List (ACL) Overview and Managing ACLs Using the REST API.
Storage Class Options
By default, Amazon S3 uses the STANDARD storage class to store newly created objects. The STANDARD storage class provides high durability and high availability. Depending on performance needs, you can specify a different storage class. For more information, see Storage Classes in the Amazon S3 Service Developer Guide.
If you enable versioning for a bucket, Amazon S3 automatically generates a unique version ID for the object being stored. Amazon S3 returns this ID in the response. When you enable versioning for a bucket, if Amazon S3 receives multiple write requests for the same object simultaneously, it stores all of the objects.
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-Length: ContentLength Content-MD5: ContentMD5 Content-Type: ContentType 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-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-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 Body
URI Request Parameters
The request uses the following URI parameters.
Bucket name to which the PUT operation was initiated.
When using this API with an access point, you must direct requests to the access point hostname. The access point hostname takes the form AccessPointName-AccountId.s3-accesspoint.Region.amazonaws.com. When using this operation using an access point through the AWS SDKs, you provide the access point ARN in place of the bucket name. For more information about access point ARNs, see Using Access Points in the Amazon Simple Storage Service Developer Guide.
Can be used to specify caching behavior along the request/reply chain. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.9 .
Specifies presentational information for the object. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.5.1 .
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. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.11 .
The language the content is in.
Size of the body in bytes. This parameter is useful when the size of the body cannot be determined automatically. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.13 .
The base64-encoded 128-bit MD5 digest of the message (without the headers) according to RFC 1864. This header can be used as a message integrity check to verify that the data is the same data that was originally sent. Although it is optional, we recommend using the Content-MD5 mechanism as an end-to-end integrity check. For more information about REST request authentication, see REST Authentication.
A standard MIME type describing the format of the contents. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.17 .
The date and time at which the object is no longer cacheable. For more information, see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.21 .
Object key for which the PUT operation was initiated.
Length Constraints: Minimum length of 1.
The canned ACL to apply to the object. For more information, see Canned ACL.
Valid Values: private | public-read | public-read-write | authenticated-read | aws-exec-read | bucket-owner-read | bucket-owner-full-control
Gives the grantee READ, READ_ACP, and WRITE_ACP permissions on the object.
Allows grantee to read the object data and its metadata.
Allows grantee to read the object ACL.
Allows grantee to write the ACL for the applicable object.
Specifies whether a legal hold will be applied to this object. For more information about S3 Object Lock, see Object Lock.
Valid Values: ON | OFF
The Object Lock mode that you want to apply to this object.
Valid Values: GOVERNANCE | COMPLIANCE
The date and time when you want this object's Object Lock to expire.
Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. For information about downloading objects from requester pays buckets, see Downloading Objects in Requestor Pays Buckets in the Amazon S3 Developer Guide.
Valid Values: requester
The server-side encryption algorithm used when storing this object in Amazon S3 (for example, AES256, aws:kms).
Valid Values: AES256 | aws:kms
If x-amz-server-side-encryption is present and has the value of aws:kms, this header specifies the ID of the AWS Key Management Service (AWS KMS) symmetrical customer managed customer master key (CMK) that was used for the object.
If the value of x-amz-server-side-encryption is aws:kms, this header specifies the ID of the symmetric customer managed AWS KMS CMK that will be used for the object. If you specify x-amz-server-side-encryption:aws:kms, but do not provide x-amz-server-side-encryption-aws-kms-key-id, Amazon S3 uses the AWS managed CMK in AWS to protect the data.
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.
Specifies the algorithm to use to when encrypting the object (for example, AES256).
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 S3 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.
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 that the encryption key was transmitted without error.
If you don't specify, S3 Standard is the default storage class. Amazon S3 supports other storage classes.
Valid Values: STANDARD | REDUCED_REDUNDANCY | STANDARD_IA | ONEZONE_IA | INTELLIGENT_TIERING | GLACIER | DEEP_ARCHIVE
The tag-set for the object. The tag-set must be encoded as URL Query parameters. (For example, "Key1=Value1")
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. For information about object metadata, see Object Key and Metadata.
In the following example, the request header sets the redirect to an object (anotherPage.html) in the same bucket:
In the following example, the request header sets the object redirect to another website:
The request accepts the following binary data.
HTTP/1.1 200 x-amz-expiration: Expiration ETag: ETag x-amz-server-side-encryption: ServerSideEncryption x-amz-version-id: VersionId 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
If the action is successful, the service sends back an HTTP 200 response.
The response returns the following HTTP headers.
Entity tag for the uploaded object.
If the expiration is configured for the object (see PutBucketLifecycleConfiguration), the response includes this header. It includes the expiry-date and rule-id key-value pairs that provide information about object expiration. The value of the rule-id is URL encoded.
If present, indicates that the requester was successfully charged for the request.
Valid Values: requester
If you specified server-side encryption either with an AWS KMS customer master key (CMK) or Amazon S3-managed encryption key in your PUT request, the response includes this header. It confirms the encryption algorithm that Amazon S3 used to encrypt the object.
Valid Values: AES256 | aws:kms
If x-amz-server-side-encryption is present and has the value of aws:kms, this header specifies the ID of the AWS Key Management Service (AWS KMS) symmetric customer managed customer master key (CMK) that was used for the object.
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.
If server-side encryption with a customer-provided encryption key was requested, the response will include this header confirming the encryption algorithm used.
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.
Version of the object.
Example 1: Upload an object
The following request stores the my-image.jpg file in the myBucket bucket.
PUT /my-image.jpg HTTP/1.1 Host: myBucket.s3.<Region>.amazonaws.com Date: Wed, 12 Oct 2009 17:50:00 GMT Authorization: authorization string Content-Type: text/plain Content-Length: 11434 x-amz-meta-author: Janet Expect: 100-continue [11434 bytes of object data]