Updated on 2024-05-31 GMT+08:00

Sharing an Object


You can share temporary URLs of your objects with others for them to access your objects stored in OBS.

Background Information

File sharing is temporary. All sharing URLs are only valid for a limited period of time.

A temporary URL consists of the access domain name and the temporary authentication information of a file. Example:


The temporary authentication information contains the AccessKeyId, Expires, x-obs-security-token, and Signature parameters. AccessKeyId, x-obs-security-token, and Signature are used for authentication. The Expires parameter specifies the validity period of the authentication. For more information about temporary authentication methods and parameters, see Authentication of Signature in a URL in Object Storage Service API Reference.

After an object is shared on OBS Console, the system will generate a URL that contains the temporary authentication information, valid for five minutes since its generation by default. Each time you change the validity period of a URL, OBS obtains the authentication information again to generate a new URL for sharing, which takes effect since the time when the validity period is changed.


  • An object shared from OBS Console can be valid for one minute to 18 hours. If you need a longer validity period, use OBS Browser+ that allows a validity period of up to one year to share the object. If you want a shared object permanently valid, use a bucket policy to grant anonymous users the read-only permission for the object.
  • Only version 3.0 buckets support file sharing. You can view the bucket version in the Basic Information area on the Overview page of a bucket.
  • Archive objects can be shared only after they have been restored.
  • Deep Archive objects can be shared only after they have been restored.
  • Object sharing is available in all regions except CN Southwest-Guiyang1.


  1. In the navigation pane of OBS Console, choose Object Storage.
  2. In the bucket list, click the bucket you want to operate to go to the Objects page.
  3. Locate the file to be shared and click Share in the Operation column.

    Once the Share File dialog box is opened, the URL is effective and valid for five minutes by default. If you change the validity period, the authentication information in the URL changes accordingly, and the URL's new validity period starts upon the change.

    Figure 1 Sharing a file

  4. Operate the URL as follows:

    • Click Open URL to preview the file on a new page or directly download it to your default download path.
    • Click Copy Link to share the link to others for them to access this file using a browser.
    • Click Copy Path to share the file path to users who have access to the bucket. The users then can search for the file by pasting the shared path to the search box of the bucket.

    Within the URL validity period, anyone who has the URL can access the file.