AWS Import/Export
Developer Guide (API Version 2014-12-18)

Appendix C: File Extension to MIME Types

AWS Import/Export uses MIME types as defined by the Internet Assigned Numbers Authorities (IANA). To determine MIME type, AWS Import/Export does a case-insensitive lookup against the MIME type table on the IANA website. To see that table, go to

Unrecognized file types use the Amazon S3 default Content-Type of application/octet-stream.