Attachment Manager 
Path to Attachment ManagerAttachments > Attachment Manager.

Using the vBulletin Attachment Manager, you can specify the types of attachments (for example, JPB, GIF, or PDF) you want to allow users to upload to your site, the maximum filesize for a given attachment, the maximum dimensions for an image attachment, and whether or not as well as how thumbnails can be created from full-size images.

When you open the Attachment Manager, you are shown a tabular summary of the currently allowed attachment file types and their characteristics.

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The form has five columns. Each column displays a piece of information for the extensions. The information is as follows:From the Attachment Manager home screen you can do any of the following tasks:
User Contributed Notes: Attachment Manager