# aws s3 presign > Generate pre-signed URLs for Amazon S3 objects. > More information: . - Generate a pre-signed URL for a specific S3 object that is valid for one hour: `aws s3 presign s3://{{bucket_name}}/{{path/to/file}}` - Generate a pre-signed URL valid for a specific lifetime: `aws s3 presign s3://{{bucket_name}}/{{path/to/file}} --expires-in {{duration_in_seconds}}` - Display help: `aws s3 presign help`