Objects: insert

Stores a new object and metadata. The uploaded object replaces any existing object with the same name. For tips on uploading to Cloud Storage, see best practices. For examples of performing object uploads with different Cloud Storage tools and client libraries, see the Uploading Objects guide.

This method accepts uploaded object data with the following characteristics:

Maximum file size: 5 TiB
Accepted Media MIME types: */*

This method generally requires the following headers be included in a request:

The authenticated user must have sufficient permission to use this method.

Note: Metadata-only requests are not allowed. To change an object's metadata, use either the update or patch methods.

Request

HTTP request

Note: The request endpoint for this method differs from typical Cloud Storage JSON API endpoints.

POST https://storage.googleapis.com/upload/storage/v1/b/bucket/o

In addition to standard query parameters, the following query parameters apply to this method. Note that for resumable uploads, these header can be used in the initial POST request but are ignored in the subsequent PUT requests.

To see an example of how to include query parameters in a request, see the JSON API Overview page.

Parameters

Parameter name	Value	Description
Path parameters
`bucket`	`string`	Name of the bucket in which to store the new object. Overrides the provided object metadata's `bucket` value, if any.
Required query parameters
`name`	`string`	Name of the object. Not required if the request body contains object metadata that includes a `name` value. Overrides the object metadata's `name` value, if any. For information about how to URL encode object names to be path safe, see Encoding URI path parts.
`uploadType`	`string`	The type of upload request to the /upload URI. Acceptable values are: `media` - Data-only upload. Upload the object data only, without any metadata. `multipart` - Multipart upload. Upload both the object data and its metadata, in a single request. `resumable` - Resumable upload. Upload the object data in a resumable fashion, using a series of at least two requests where the first request includes the metadata.
Optional query parameters
`contentEncoding`	`string`	If set, sets the `contentEncoding` property of the final object to this value. Setting this parameter is equivalent to setting the `contentEncoding` metadata property. This can be useful when uploading an object with `uploadType=media` to indicate the encoding of the content being uploaded.
`ifGenerationMatch`	`long`	Makes the operation conditional on whether the object's current generation matches the given value. Setting to 0 makes the operation succeed only if there are no live versions of the object. For more information, see Generation numbers and preconditions.
`ifGenerationNotMatch`	`long`	Makes the operation conditional on whether the object's current generation does not match the given value. If no live object exists, the precondition fails. Setting to 0 makes the operation succeed only if there is a live version of the object. For more information, see Generation numbers and preconditions.
`ifMetagenerationMatch`	`long`	Makes the operation conditional on whether the object's current metageneration matches the given value. For more information, see Generation numbers and preconditions.
`ifMetagenerationNotMatch`	`long`	Makes the operation conditional on whether the object's current metageneration does not match the given value. For more information, see Generation numbers and preconditions.
`kmsKeyName`	`string`	Resource name of the Cloud KMS key that will be used to encrypt the object. If not specified, the request uses the bucket's default Cloud KMS key, if any, or a Google-managed encryption key.
`predefinedAcl`	`string`	Apply a predefined set of access controls to this object. Acceptable values are: `authenticatedRead`: Object owner gets `OWNER` access, and `allAuthenticatedUsers` get `READER` access. `bucketOwnerFullControl`: Object owner gets `OWNER` access, and project team owners get `OWNER` access. `bucketOwnerRead`: Object owner gets `OWNER` access, and project team owners get `READER` access. `private`: Object owner gets `OWNER` access. `projectPrivate`: Object owner gets `OWNER` access, and project team members get access according to their roles. `publicRead`: Object owner gets `OWNER` access, and `allUsers` get `READER` access. If `iamConfiguration.uniformBucketLevelAccess.enabled` is set to `true`, requests that include this parameter fail with a `400 Bad Request` response.
`projection`	`string`	Set of properties to return. Defaults to `noAcl`, unless the object resource specifies the `acl` property, when it defaults to `full`. Acceptable values are: `full`: Include all properties. `noAcl`: Omit the `owner`, `acl` property.
Optional extension headers
`X-Goog-Encryption-Algorithm`	`string`	The encryption algorithm to use, which must be `AES256`. Used when encrypting the uploaded object with a customer-supplied encryption key.
`X-Goog-Encryption-Key`	`string`	An RFC 4648 Base64-encoded string of your AES-256 encryption key. Used when encrypting the uploaded object with a customer-supplied encryption key.
`X-Goog-Encryption-Key-Sha256`	`string`	An RFC 4648 Base64-encoded string of the SHA256 hash of your encryption key. Used when encrypting the uploaded object with a customer-supplied encryption key.

Request body

When performing a simple upload, provide the object data in the request body. When performing a multipart upload or when initiating a resumable upload, both of which allow you to include object metadata as part of the request, supply the following properties. If you do not wish to provide object metadata in a resumable upload, the request body can be empty.

Property name	Value	Description	Notes
Optional Properties
`acl[]`	`list`	Access controls on the object, containing one or more objectAccessControls Resources. Do not supply this field if `iamConfiguration.uniformBucketLevelAccess.enabled` is `true` for the bucket to which you are uploading the object.	writable
`cacheControl`	`string`	Cache-Control directive for the object data. If omitted, and the object is accessible to all anonymous users, the default will be `"public, max-age=3600"`.	writable
`contentDisposition`	`string`	Content-Disposition of the object data.	writable
`contentEncoding`	`string`	Content-Encoding of the object data.	writable
`contentLanguage`	`string`	Content-Language of the object data.	writable
`contentType`	`string`	Content-Type of the object data. If an object is stored without a Content-Type, it is served as application/octet-stream.	writable
`crc32c`	`string`	CRC32c checksum, as described in RFC 4960, Appendix B; encoded using base64 in big-endian byte order. For more information about using the CRC32c checksum, see Hashes and ETags: Best Practices.	writable
`customTime`	`datetime`¹	A user-specified timestamp for the object in RFC 3339 format.	writable
`eventBasedHold`	`boolean`	Whether or not the object is subject to an event-based hold.	writable
`md5Hash`	`string`	MD5 hash of the data; encoded using base64. For more information about using the MD5 hash, see Hashes and ETags: Best Practices.	writable
`metadata`	`object`	User-provided metadata, in key/value pairs.	writable
`metadata.(key)`	`string`	An individual metadata entry.	writable
`name`	`string`	The name of the object. Required if not specified by URL parameter.	writable
`storageClass`	`string`	Storage class of the object.	writable
`temporaryHold`	`boolean`	Whether or not the object is subject to a temporary hold.	writable

¹ This property is a string formatted as the specified value type.

Response

If successful, this method returns an object resource in the response body.

For information about status and error codes returned by this API, see the reference page.