HEAD Bucket

Indicates if a bucket exists and whether the requester has READ access to it.

If you make a HEAD request that's scoped to a bucket that doesn't exist, you will get a 404 Not Found status code and the body of the error response will contain NoSuchBucket in the Code element.

Query string parameters

This request does not typically include query string parameters.

See signed URL query string parameters for information on the parameters you include when creating and using signed URLs.

Request headers

Header	Description	Required
Authorization	The authentication string for the request.	Yes
Content-Length	The length of the request body without headers (in bytes).	No
Date	The date and time of the request.	No
Host	The URI for Cloud Storage. For more information, see Request Endpoints.	Yes
x-goog-user-project	The project to be billed for charges associated with the request.	No

Request body elements

This request does not include an XML document in the request body.

Request syntax

HEAD / HTTP/1.1
Host: BUCKET_NAME.storage.googleapis.com
Date: DATE
Content-Length: 0
Authorization: AUTHENTICATION_STRING

Response headers

The request returns standard response headers.

Response body elements

The response does not include an XML document in the response body. Error responses to HEAD requests also do not contain a response body.

Example

The following sample shows a HEAD request for a bucket named travel-maps.

Request

HEAD / HTTP/1.1
Host: travel-maps.storage.googleapis.com
Authorization: Bearer ya29.AHES6ZRVmB7fkLtd1XTmq6mo0S1wqZZi3-Lh_s-6Uw7p8vtgSwg

Response

HTTP/1.1 200 OK
...